Finding the Fourth Proportional to 1,377.91, 1,901.48 and 748.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.91 : 1,901.48 = 748.43 : x
2. Step 2: Convert to fraction form
   1,377.91/1,901.48 = 748.43/x
3. Step 3: Cross multiply
   1,377.91x = 1,901.48 × 748.43
4. Step 4: Simplify right side
   1,377.91x = 1,423,116.61
5. Step 5: Solve for x
   x = 1,423,116.61/1,377.91
6. Step 6: Final answer
   x = 1,032.81