Finding the Fourth Proportional to 1,861.31, 2,793.25 and 707.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,861.31 : 2,793.25 = 707.06 : x
2. Step 2: Convert to fraction form
   1,861.31/2,793.25 = 707.06/x
3. Step 3: Cross multiply
   1,861.31x = 2,793.25 × 707.06
4. Step 4: Simplify right side
   1,861.31x = 1,975,003.21
5. Step 5: Solve for x
   x = 1,975,003.21/1,861.31
6. Step 6: Final answer
   x = 1,061.08