Finding the Fourth Proportional to 1,436.94, 2,156.22 and 787.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.94 : 2,156.22 = 787.32 : x
2. Step 2: Convert to fraction form
   1,436.94/2,156.22 = 787.32/x
3. Step 3: Cross multiply
   1,436.94x = 2,156.22 × 787.32
4. Step 4: Simplify right side
   1,436.94x = 1,697,635.13
5. Step 5: Solve for x
   x = 1,697,635.13/1,436.94
6. Step 6: Final answer
   x = 1,181.42