Finding the Fourth Proportional to 2,478.77, 3,418.15 and 1,732.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,478.77 : 3,418.15 = 1,732.46 : x
2. Step 2: Convert to fraction form
   2,478.77/3,418.15 = 1,732.46/x
3. Step 3: Cross multiply
   2,478.77x = 3,418.15 × 1,732.46
4. Step 4: Simplify right side
   2,478.77x = 5,921,791.06
5. Step 5: Solve for x
   x = 5,921,791.06/2,478.77
6. Step 6: Final answer
   x = 2,389.00