Finding the Fourth Proportional to 5,103.57, 7,655.51 and 1,405.86

Step by Step Solution

1. Step 1: Write the proportion equation
   5,103.57 : 7,655.51 = 1,405.86 : x
2. Step 2: Convert to fraction form
   5,103.57/7,655.51 = 1,405.86/x
3. Step 3: Cross multiply
   5,103.57x = 7,655.51 × 1,405.86
4. Step 4: Simplify right side
   5,103.57x = 10,762,575.29
5. Step 5: Solve for x
   x = 10,762,575.29/5,103.57
6. Step 6: Final answer
   x = 2,108.83