Finding the Fourth Proportional to 937.47, 1,404.86 and 688.72

Step by Step Solution

1. Step 1: Write the proportion equation
   937.47 : 1,404.86 = 688.72 : x
2. Step 2: Convert to fraction form
   937.47/1,404.86 = 688.72/x
3. Step 3: Cross multiply
   937.47x = 1,404.86 × 688.72
4. Step 4: Simplify right side
   937.47x = 967,552.02
5. Step 5: Solve for x
   x = 967,552.02/937.47
6. Step 6: Final answer
   x = 1,032.09