Finding the Fourth Proportional to 2,556.63, 3,834.32 and 707.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,556.63 : 3,834.32 = 707.31 : x
2. Step 2: Convert to fraction form
   2,556.63/3,834.32 = 707.31/x
3. Step 3: Cross multiply
   2,556.63x = 3,834.32 × 707.31
4. Step 4: Simplify right side
   2,556.63x = 2,712,049.34
5. Step 5: Solve for x
   x = 2,712,049.34/2,556.63
6. Step 6: Final answer
   x = 1,060.79