Finding the Fourth Proportional to 1,585.92, 2,188.61 and 887.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,585.92 : 2,188.61 = 887.29 : x
2. Step 2: Convert to fraction form
   1,585.92/2,188.61 = 887.29/x
3. Step 3: Cross multiply
   1,585.92x = 2,188.61 × 887.29
4. Step 4: Simplify right side
   1,585.92x = 1,941,931.77
5. Step 5: Solve for x
   x = 1,941,931.77/1,585.92
6. Step 6: Final answer
   x = 1,224.48