Finding the Fourth Proportional to 1,061.91, 1,585.49 and 996.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.91 : 1,585.49 = 996.30 : x
2. Step 2: Convert to fraction form
   1,061.91/1,585.49 = 996.30/x
3. Step 3: Cross multiply
   1,061.91x = 1,585.49 × 996.30
4. Step 4: Simplify right side
   1,061.91x = 1,579,623.69
5. Step 5: Solve for x
   x = 1,579,623.69/1,061.91
6. Step 6: Final answer
   x = 1,487.53