Finding the Fourth Proportional to 1,604.94, 2,402.18 and 863.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,604.94 : 2,402.18 = 863.49 : x
2. Step 2: Convert to fraction form
   1,604.94/2,402.18 = 863.49/x
3. Step 3: Cross multiply
   1,604.94x = 2,402.18 × 863.49
4. Step 4: Simplify right side
   1,604.94x = 2,074,254.09
5. Step 5: Solve for x
   x = 2,074,254.09/1,604.94
6. Step 6: Final answer
   x = 1,292.42