Finding the Fourth Proportional to 1,350.47, 1,863.71 and 790.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,350.47 : 1,863.71 = 790.86 : x
2. Step 2: Convert to fraction form
   1,350.47/1,863.71 = 790.86/x
3. Step 3: Cross multiply
   1,350.47x = 1,863.71 × 790.86
4. Step 4: Simplify right side
   1,350.47x = 1,473,939.69
5. Step 5: Solve for x
   x = 1,473,939.69/1,350.47
6. Step 6: Final answer
   x = 1,091.43