Finding the Fourth Proportional to 2,601.72, 3,902.29 and 653.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,601.72 : 3,902.29 = 653.93 : x
2. Step 2: Convert to fraction form
   2,601.72/3,902.29 = 653.93/x
3. Step 3: Cross multiply
   2,601.72x = 3,902.29 × 653.93
4. Step 4: Simplify right side
   2,601.72x = 2,551,824.50
5. Step 5: Solve for x
   x = 2,551,824.50/2,601.72
6. Step 6: Final answer
   x = 980.82