Finding the Fourth Proportional to 1,861.71, 2,793.25 and 766.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,861.71 : 2,793.25 = 766.16 : x
2. Step 2: Convert to fraction form
   1,861.71/2,793.25 = 766.16/x
3. Step 3: Cross multiply
   1,861.71x = 2,793.25 × 766.16
4. Step 4: Simplify right side
   1,861.71x = 2,140,076.42
5. Step 5: Solve for x
   x = 2,140,076.42/1,861.71
6. Step 6: Final answer
   x = 1,149.52