Finding the Fourth Proportional to 3,345.58, 5,018.28 and 1,124.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,345.58 : 5,018.28 = 1,124.56 : x
2. Step 2: Convert to fraction form
   3,345.58/5,018.28 = 1,124.56/x
3. Step 3: Cross multiply
   3,345.58x = 5,018.28 × 1,124.56
4. Step 4: Simplify right side
   3,345.58x = 5,643,356.96
5. Step 5: Solve for x
   x = 5,643,356.96/3,345.58
6. Step 6: Final answer
   x = 1,686.81