Finding the Fourth Proportional to 1,142.01, 1,710.25 and 653.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,142.01 : 1,710.25 = 653.58 : x
2. Step 2: Convert to fraction form
   1,142.01/1,710.25 = 653.58/x
3. Step 3: Cross multiply
   1,142.01x = 1,710.25 × 653.58
4. Step 4: Simplify right side
   1,142.01x = 1,117,785.20
5. Step 5: Solve for x
   x = 1,117,785.20/1,142.01
6. Step 6: Final answer
   x = 978.79