Finding the Fourth Proportional to 2,920.74, 4,031.52 and 1,872.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,920.74 : 4,031.52 = 1,872.78 : x
2. Step 2: Convert to fraction form
   2,920.74/4,031.52 = 1,872.78/x
3. Step 3: Cross multiply
   2,920.74x = 4,031.52 × 1,872.78
4. Step 4: Simplify right side
   2,920.74x = 7,550,150.03
5. Step 5: Solve for x
   x = 7,550,150.03/2,920.74
6. Step 6: Final answer
   x = 2,585.01