Finding the Fourth Proportional to 1,147.02, 1,580.62 and 814.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,147.02 : 1,580.62 = 814.52 : x
2. Step 2: Convert to fraction form
   1,147.02/1,580.62 = 814.52/x
3. Step 3: Cross multiply
   1,147.02x = 1,580.62 × 814.52
4. Step 4: Simplify right side
   1,147.02x = 1,287,441.15
5. Step 5: Solve for x
   x = 1,287,441.15/1,147.02
6. Step 6: Final answer
   x = 1,122.42