Finding the Fourth Proportional to 1,877.43, 2,590.77 and 1,080.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,877.43 : 2,590.77 = 1,080.69 : x
2. Step 2: Convert to fraction form
   1,877.43/2,590.77 = 1,080.69/x
3. Step 3: Cross multiply
   1,877.43x = 2,590.77 × 1,080.69
4. Step 4: Simplify right side
   1,877.43x = 2,799,813.83
5. Step 5: Solve for x
   x = 2,799,813.83/1,877.43
6. Step 6: Final answer
   x = 1,491.30