Finding the Fourth Proportional to 1,780.22, 2,457.78 and 1,151.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,780.22 : 2,457.78 = 1,151.04 : x
2. Step 2: Convert to fraction form
   1,780.22/2,457.78 = 1,151.04/x
3. Step 3: Cross multiply
   1,780.22x = 2,457.78 × 1,151.04
4. Step 4: Simplify right side
   1,780.22x = 2,829,003.09
5. Step 5: Solve for x
   x = 2,829,003.09/1,780.22
6. Step 6: Final answer
   x = 1,589.13