Finding the Fourth Proportional to 1,787.28, 2,467.71 and 1,158.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,787.28 : 2,467.71 = 1,158.12 : x
2. Step 2: Convert to fraction form
   1,787.28/2,467.71 = 1,158.12/x
3. Step 3: Cross multiply
   1,787.28x = 2,467.71 × 1,158.12
4. Step 4: Simplify right side
   1,787.28x = 2,857,904.31
5. Step 5: Solve for x
   x = 2,857,904.31/1,787.28
6. Step 6: Final answer
   x = 1,599.02