Finding the Fourth Proportional to 5,111.79, 7,669.31 and 1,824.81

Step by Step Solution

1. Step 1: Write the proportion equation
   5,111.79 : 7,669.31 = 1,824.81 : x
2. Step 2: Convert to fraction form
   5,111.79/7,669.31 = 1,824.81/x
3. Step 3: Cross multiply
   5,111.79x = 7,669.31 × 1,824.81
4. Step 4: Simplify right side
   5,111.79x = 13,995,050.47
5. Step 5: Solve for x
   x = 13,995,050.47/5,111.79
6. Step 6: Final answer
   x = 2,737.80