Finding the Fourth Proportional to 1,042.01, 1,437.72 and 710.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,042.01 : 1,437.72 = 710.78 : x
2. Step 2: Convert to fraction form
   1,042.01/1,437.72 = 710.78/x
3. Step 3: Cross multiply
   1,042.01x = 1,437.72 × 710.78
4. Step 4: Simplify right side
   1,042.01x = 1,021,898.76
5. Step 5: Solve for x
   x = 1,021,898.76/1,042.01
6. Step 6: Final answer
   x = 980.70