Finding the Fourth Proportional to 2,526.64, 3,792.12 and 988.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,526.64 : 3,792.12 = 988.72 : x
2. Step 2: Convert to fraction form
   2,526.64/3,792.12 = 988.72/x
3. Step 3: Cross multiply
   2,526.64x = 3,792.12 × 988.72
4. Step 4: Simplify right side
   2,526.64x = 3,749,344.89
5. Step 5: Solve for x
   x = 3,749,344.89/2,526.64
6. Step 6: Final answer
   x = 1,483.93