Finding the Fourth Proportional to 2,654.58, 3,981.85 and 706.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,654.58 : 3,981.85 = 706.78 : x
2. Step 2: Convert to fraction form
   2,654.58/3,981.85 = 706.78/x
3. Step 3: Cross multiply
   2,654.58x = 3,981.85 × 706.78
4. Step 4: Simplify right side
   2,654.58x = 2,814,291.94
5. Step 5: Solve for x
   x = 2,814,291.94/2,654.58
6. Step 6: Final answer
   x = 1,060.16