Finding the Fourth Proportional to 1,377.87, 1,901.43 and 748.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.87 : 1,901.43 = 748.41 : x
2. Step 2: Convert to fraction form
   1,377.87/1,901.43 = 748.41/x
3. Step 3: Cross multiply
   1,377.87x = 1,901.43 × 748.41
4. Step 4: Simplify right side
   1,377.87x = 1,423,049.23
5. Step 5: Solve for x
   x = 1,423,049.23/1,377.87
6. Step 6: Final answer
   x = 1,032.79