Finding the Fourth Proportional to 1,359.28, 1,876.86 and 887.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.28 : 1,876.86 = 887.32 : x
2. Step 2: Convert to fraction form
   1,359.28/1,876.86 = 887.32/x
3. Step 3: Cross multiply
   1,359.28x = 1,876.86 × 887.32
4. Step 4: Simplify right side
   1,359.28x = 1,665,375.42
5. Step 5: Solve for x
   x = 1,665,375.42/1,359.28
6. Step 6: Final answer
   x = 1,225.19