Finding the Fourth Proportional to 1,382.86, 2,070.63 and 731.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.86 : 2,070.63 = 731.62 : x
2. Step 2: Convert to fraction form
   1,382.86/2,070.63 = 731.62/x
3. Step 3: Cross multiply
   1,382.86x = 2,070.63 × 731.62
4. Step 4: Simplify right side
   1,382.86x = 1,514,914.32
5. Step 5: Solve for x
   x = 1,514,914.32/1,382.86
6. Step 6: Final answer
   x = 1,095.49