Finding the Fourth Proportional to 2,907.57, 4,012.32 and 1,648.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,907.57 : 4,012.32 = 1,648.55 : x
2. Step 2: Convert to fraction form
   2,907.57/4,012.32 = 1,648.55/x
3. Step 3: Cross multiply
   2,907.57x = 4,012.32 × 1,648.55
4. Step 4: Simplify right side
   2,907.57x = 6,614,501.89
5. Step 5: Solve for x
   x = 6,614,501.89/2,907.57
6. Step 6: Final answer
   x = 2,274.92