Finding the Fourth Proportional to 1,780.01, 2,457.11 and 1,081.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,780.01 : 2,457.11 = 1,081.25 : x
2. Step 2: Convert to fraction form
   1,780.01/2,457.11 = 1,081.25/x
3. Step 3: Cross multiply
   1,780.01x = 2,457.11 × 1,081.25
4. Step 4: Simplify right side
   1,780.01x = 2,656,744.78
5. Step 5: Solve for x
   x = 2,656,744.78/1,780.01
6. Step 6: Final answer
   x = 1,492.54