Finding the Fourth Proportional to 3,345.62, 5,018.86 and 1,153.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,345.62 : 5,018.86 = 1,153.76 : x
2. Step 2: Convert to fraction form
   3,345.62/5,018.86 = 1,153.76/x
3. Step 3: Cross multiply
   3,345.62x = 5,018.86 × 1,153.76
4. Step 4: Simplify right side
   3,345.62x = 5,790,559.91
5. Step 5: Solve for x
   x = 5,790,559.91/3,345.62
6. Step 6: Final answer
   x = 1,730.79