Finding the Fourth Proportional to 1,854.89, 2,781.12 and 758.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,854.89 : 2,781.12 = 758.15 : x
2. Step 2: Convert to fraction form
   1,854.89/2,781.12 = 758.15/x
3. Step 3: Cross multiply
   1,854.89x = 2,781.12 × 758.15
4. Step 4: Simplify right side
   1,854.89x = 2,108,506.13
5. Step 5: Solve for x
   x = 2,108,506.13/1,854.89
6. Step 6: Final answer
   x = 1,136.73