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Finding the Fourth Proportional to 1,698.03, 2,547.05 and 1,120.77

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Solution

The fourth proportional to 1,698.03, 2,547.05 and 1,120.77 is: 1,681.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,698.03 : 2,547.05 = 1,120.77 : x
  2. Step 2: Convert to fraction form
    1,698.03/2,547.05 = 1,120.77/x
  3. Step 3: Cross multiply
    1,698.03x = 2,547.05 × 1,120.77
  4. Step 4: Simplify right side
    1,698.03x = 2,854,651.62
  5. Step 5: Solve for x
    x = 2,854,651.62/1,698.03
  6. Step 6: Final answer
    x = 1,681.16

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