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Finding the Fourth Proportional to 1,398.72, 2,094.84 and 1,350.12

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Solution

The fourth proportional to 1,398.72, 2,094.84 and 1,350.12 is: 2,022.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398.72 : 2,094.84 = 1,350.12 : x
  2. Step 2: Convert to fraction form
    1,398.72/2,094.84 = 1,350.12/x
  3. Step 3: Cross multiply
    1,398.72x = 2,094.84 × 1,350.12
  4. Step 4: Simplify right side
    1,398.72x = 2,828,285.38
  5. Step 5: Solve for x
    x = 2,828,285.38/1,398.72
  6. Step 6: Final answer
    x = 2,022.05

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