Finding the Fourth Proportional to 2,553.86, 3,830.48 and 705.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,553.86 : 3,830.48 = 705.18 : x
2. Step 2: Convert to fraction form
   2,553.86/3,830.48 = 705.18/x
3. Step 3: Cross multiply
   2,553.86x = 3,830.48 × 705.18
4. Step 4: Simplify right side
   2,553.86x = 2,701,177.89
5. Step 5: Solve for x
   x = 2,701,177.89/2,553.86
6. Step 6: Final answer
   x = 1,057.68