Finding the Fourth Proportional to 3,345.46, 5,011.71 and 1,615.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,345.46 : 5,011.71 = 1,615.30 : x
2. Step 2: Convert to fraction form
   3,345.46/5,011.71 = 1,615.30/x
3. Step 3: Cross multiply
   3,345.46x = 5,011.71 × 1,615.30
4. Step 4: Simplify right side
   3,345.46x = 8,095,415.16
5. Step 5: Solve for x
   x = 8,095,415.16/3,345.46
6. Step 6: Final answer
   x = 2,419.82