Finding the Fourth Proportional to 3,061.68, 4,225.20 and 1,802.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.68 : 4,225.20 = 1,802.50 : x
2. Step 2: Convert to fraction form
   3,061.68/4,225.20 = 1,802.50/x
3. Step 3: Cross multiply
   3,061.68x = 4,225.20 × 1,802.50
4. Step 4: Simplify right side
   3,061.68x = 7,615,923
5. Step 5: Solve for x
   x = 7,615,923/3,061.68
6. Step 6: Final answer
   x = 2,487.50