Finding the Fourth Proportional to 2,411.25, 3,615.45 and 1,178.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,411.25 : 3,615.45 = 1,178.30 : x
2. Step 2: Convert to fraction form
   2,411.25/3,615.45 = 1,178.30/x
3. Step 3: Cross multiply
   2,411.25x = 3,615.45 × 1,178.30
4. Step 4: Simplify right side
   2,411.25x = 4,260,066.66
5. Step 5: Solve for x
   x = 4,260,066.66/2,411.25
6. Step 6: Final answer
   x = 1,766.75