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Finding the Fourth Proportional to 1,218.94, 1,828.66 and 397.00

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Solution

The fourth proportional to 1,218.94, 1,828.66 and 397.00 is: 595.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218.94 : 1,828.66 = 397.00 : x
  2. Step 2: Convert to fraction form
    1,218.94/1,828.66 = 397.00/x
  3. Step 3: Cross multiply
    1,218.94x = 1,828.66 × 397.00
  4. Step 4: Simplify right side
    1,218.94x = 725,968.88
  5. Step 5: Solve for x
    x = 725,968.88/1,218.94
  6. Step 6: Final answer
    x = 595.57

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