Finding the Fourth Proportional to 1,366.86, 2,047.02 and 787.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,366.86 : 2,047.02 = 787.98 : x
2. Step 2: Convert to fraction form
   1,366.86/2,047.02 = 787.98/x
3. Step 3: Cross multiply
   1,366.86x = 2,047.02 × 787.98
4. Step 4: Simplify right side
   1,366.86x = 1,613,010.82
5. Step 5: Solve for x
   x = 1,613,010.82/1,366.86
6. Step 6: Final answer
   x = 1,180.08