Finding the Fourth Proportional to 2,385.45, 3,290.69 and 1,545.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,385.45 : 3,290.69 = 1,545.08 : x
2. Step 2: Convert to fraction form
   2,385.45/3,290.69 = 1,545.08/x
3. Step 3: Cross multiply
   2,385.45x = 3,290.69 × 1,545.08
4. Step 4: Simplify right side
   2,385.45x = 5,084,366.71
5. Step 5: Solve for x
   x = 5,084,366.71/2,385.45
6. Step 6: Final answer
   x = 2,131.41