Finding the Fourth Proportional to 1,377.01, 1,900.16 and 787.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.01 : 1,900.16 = 787.42 : x
2. Step 2: Convert to fraction form
   1,377.01/1,900.16 = 787.42/x
3. Step 3: Cross multiply
   1,377.01x = 1,900.16 × 787.42
4. Step 4: Simplify right side
   1,377.01x = 1,496,223.99
5. Step 5: Solve for x
   x = 1,496,223.99/1,377.01
6. Step 6: Final answer
   x = 1,086.57