Finding the Fourth Proportional to 1,648.89, 2,474.32 and 869.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,648.89 : 2,474.32 = 869.46 : x
2. Step 2: Convert to fraction form
   1,648.89/2,474.32 = 869.46/x
3. Step 3: Cross multiply
   1,648.89x = 2,474.32 × 869.46
4. Step 4: Simplify right side
   1,648.89x = 2,151,330.63
5. Step 5: Solve for x
   x = 2,151,330.63/1,648.89
6. Step 6: Final answer
   x = 1,304.72