Finding the Fourth Proportional to 2,807.46, 3,875.13 and 1,812.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,807.46 : 3,875.13 = 1,812.72 : x
2. Step 2: Convert to fraction form
   2,807.46/3,875.13 = 1,812.72/x
3. Step 3: Cross multiply
   2,807.46x = 3,875.13 × 1,812.72
4. Step 4: Simplify right side
   2,807.46x = 7,024,525.65
5. Step 5: Solve for x
   x = 7,024,525.65/2,807.46
6. Step 6: Final answer
   x = 2,502.09