Finding the Fourth Proportional to 2,650.79, 3,975.89 and 703.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,650.79 : 3,975.89 = 703.15 : x
2. Step 2: Convert to fraction form
   2,650.79/3,975.89 = 703.15/x
3. Step 3: Cross multiply
   2,650.79x = 3,975.89 × 703.15
4. Step 4: Simplify right side
   2,650.79x = 2,795,633.60
5. Step 5: Solve for x
   x = 2,795,633.60/2,650.79
6. Step 6: Final answer
   x = 1,054.64