Finding the Fourth Proportional to 1,158.06, 1,596.54 and 784.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.06 : 1,596.54 = 784.47 : x
2. Step 2: Convert to fraction form
   1,158.06/1,596.54 = 784.47/x
3. Step 3: Cross multiply
   1,158.06x = 1,596.54 × 784.47
4. Step 4: Simplify right side
   1,158.06x = 1,252,437.73
5. Step 5: Solve for x
   x = 1,252,437.73/1,158.06
6. Step 6: Final answer
   x = 1,081.50