Finding the Fourth Proportional to 5,410.68, 8,111.16 and 1,945.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,410.68 : 8,111.16 = 1,945.50 : x
2. Step 2: Convert to fraction form
   5,410.68/8,111.16 = 1,945.50/x
3. Step 3: Cross multiply
   5,410.68x = 8,111.16 × 1,945.50
4. Step 4: Simplify right side
   5,410.68x = 15,780,261.78
5. Step 5: Solve for x
   x = 15,780,261.78/5,410.68
6. Step 6: Final answer
   x = 2,916.50