Finding the Fourth Proportional to 3,406.88, 5,105.73 and 1,557.03

Step by Step Solution

1. Step 1: Write the proportion equation
   3,406.88 : 5,105.73 = 1,557.03 : x
2. Step 2: Convert to fraction form
   3,406.88/5,105.73 = 1,557.03/x
3. Step 3: Cross multiply
   3,406.88x = 5,105.73 × 1,557.03
4. Step 4: Simplify right side
   3,406.88x = 7,949,774.78
5. Step 5: Solve for x
   x = 7,949,774.78/3,406.88
6. Step 6: Final answer
   x = 2,333.45