Finding the Fourth Proportional to 5,105.46, 7,657.92 and 1,407.94

Step by Step Solution

1. Step 1: Write the proportion equation
   5,105.46 : 7,657.92 = 1,407.94 : x
2. Step 2: Convert to fraction form
   5,105.46/7,657.92 = 1,407.94/x
3. Step 3: Cross multiply
   5,105.46x = 7,657.92 × 1,407.94
4. Step 4: Simplify right side
   5,105.46x = 10,781,891.88
5. Step 5: Solve for x
   x = 10,781,891.88/5,105.46
6. Step 6: Final answer
   x = 2,111.84