Finding the Fourth Proportional to 2,379.76, 3,569.37 and 648.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,379.76 : 3,569.37 = 648.52 : x
2. Step 2: Convert to fraction form
   2,379.76/3,569.37 = 648.52/x
3. Step 3: Cross multiply
   2,379.76x = 3,569.37 × 648.52
4. Step 4: Simplify right side
   2,379.76x = 2,314,807.83
5. Step 5: Solve for x
   x = 2,314,807.83/2,379.76
6. Step 6: Final answer
   x = 972.71