Finding the Fourth Proportional to 1,031.78, 1,423.89 and 737.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,031.78 : 1,423.89 = 737.75 : x
2. Step 2: Convert to fraction form
   1,031.78/1,423.89 = 737.75/x
3. Step 3: Cross multiply
   1,031.78x = 1,423.89 × 737.75
4. Step 4: Simplify right side
   1,031.78x = 1,050,464.04
5. Step 5: Solve for x
   x = 1,050,464.04/1,031.78
6. Step 6: Final answer
   x = 1,018.11