Finding the Fourth Proportional to 5,100.88, 7,651.38 and 1,981.06

Step by Step Solution

1. Step 1: Write the proportion equation
   5,100.88 : 7,651.38 = 1,981.06 : x
2. Step 2: Convert to fraction form
   5,100.88/7,651.38 = 1,981.06/x
3. Step 3: Cross multiply
   5,100.88x = 7,651.38 × 1,981.06
4. Step 4: Simplify right side
   5,100.88x = 15,157,794.70
5. Step 5: Solve for x
   x = 15,157,794.70/5,100.88
6. Step 6: Final answer
   x = 2,971.61