Finding the Fourth Proportional to 1,314.67, 1,814.25 and 790.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,314.67 : 1,814.25 = 790.71 : x
2. Step 2: Convert to fraction form
   1,314.67/1,814.25 = 790.71/x
3. Step 3: Cross multiply
   1,314.67x = 1,814.25 × 790.71
4. Step 4: Simplify right side
   1,314.67x = 1,434,545.62
5. Step 5: Solve for x
   x = 1,434,545.62/1,314.67
6. Step 6: Final answer
   x = 1,091.18