Finding the Fourth Proportional to 3,061.88, 4,225.34 and 1,802.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.88 : 4,225.34 = 1,802.78 : x
2. Step 2: Convert to fraction form
   3,061.88/4,225.34 = 1,802.78/x
3. Step 3: Cross multiply
   3,061.88x = 4,225.34 × 1,802.78
4. Step 4: Simplify right side
   3,061.88x = 7,617,358.45
5. Step 5: Solve for x
   x = 7,617,358.45/3,061.88
6. Step 6: Final answer
   x = 2,487.80