Finding the Fourth Proportional to 1,558.87, 2,150.17 and 1,061.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,558.87 : 2,150.17 = 1,061.31 : x
2. Step 2: Convert to fraction form
   1,558.87/2,150.17 = 1,061.31/x
3. Step 3: Cross multiply
   1,558.87x = 2,150.17 × 1,061.31
4. Step 4: Simplify right side
   1,558.87x = 2,281,996.92
5. Step 5: Solve for x
   x = 2,281,996.92/1,558.87
6. Step 6: Final answer
   x = 1,463.88