Finding the Fourth Proportional to 3,200.15, 4,415.69 and 1,802.63

Step by Step Solution

1. Step 1: Write the proportion equation
   3,200.15 : 4,415.69 = 1,802.63 : x
2. Step 2: Convert to fraction form
   3,200.15/4,415.69 = 1,802.63/x
3. Step 3: Cross multiply
   3,200.15x = 4,415.69 × 1,802.63
4. Step 4: Simplify right side
   3,200.15x = 7,959,837.69
5. Step 5: Solve for x
   x = 7,959,837.69/3,200.15
6. Step 6: Final answer
   x = 2,487.34