Finding the Fourth Proportional to 2,648.62, 3,973.02 and 869.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.62 : 3,973.02 = 869.86 : x
2. Step 2: Convert to fraction form
   2,648.62/3,973.02 = 869.86/x
3. Step 3: Cross multiply
   2,648.62x = 3,973.02 × 869.86
4. Step 4: Simplify right side
   2,648.62x = 3,455,971.18
5. Step 5: Solve for x
   x = 3,455,971.18/2,648.62
6. Step 6: Final answer
   x = 1,304.82