Finding the Fourth Proportional to 1,779.35, 2,455.94 and 1,081.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,779.35 : 2,455.94 = 1,081.31 : x
2. Step 2: Convert to fraction form
   1,779.35/2,455.94 = 1,081.31/x
3. Step 3: Cross multiply
   1,779.35x = 2,455.94 × 1,081.31
4. Step 4: Simplify right side
   1,779.35x = 2,655,632.48
5. Step 5: Solve for x
   x = 2,655,632.48/1,779.35
6. Step 6: Final answer
   x = 1,492.47