Finding the Fourth Proportional to 1,376.79, 1,900.03 and 787.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,376.79 : 1,900.03 = 787.33 : x
2. Step 2: Convert to fraction form
   1,376.79/1,900.03 = 787.33/x
3. Step 3: Cross multiply
   1,376.79x = 1,900.03 × 787.33
4. Step 4: Simplify right side
   1,376.79x = 1,495,945.87
5. Step 5: Solve for x
   x = 1,495,945.87/1,376.79
6. Step 6: Final answer
   x = 1,086.54