Finding the Fourth Proportional to 5,100.94, 7,648.82 and 1,981.84

Step by Step Solution

1. Step 1: Write the proportion equation
   5,100.94 : 7,648.82 = 1,981.84 : x
2. Step 2: Convert to fraction form
   5,100.94/7,648.82 = 1,981.84/x
3. Step 3: Cross multiply
   5,100.94x = 7,648.82 × 1,981.84
4. Step 4: Simplify right side
   5,100.94x = 15,158,737.43
5. Step 5: Solve for x
   x = 15,158,737.43/5,100.94
6. Step 6: Final answer
   x = 2,971.75