Finding the Fourth Proportional to 3,645.73, 5,462.31 and 2,870.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,645.73 : 5,462.31 = 2,870.69 : x
2. Step 2: Convert to fraction form
   3,645.73/5,462.31 = 2,870.69/x
3. Step 3: Cross multiply
   3,645.73x = 5,462.31 × 2,870.69
4. Step 4: Simplify right side
   3,645.73x = 15,680,612.35
5. Step 5: Solve for x
   x = 15,680,612.35/3,645.73
6. Step 6: Final answer
   x = 4,301.09