Finding the Fourth Proportional to 1,612.98, 2,225.61 and 949.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,612.98 : 2,225.61 = 949.86 : x
2. Step 2: Convert to fraction form
   1,612.98/2,225.61 = 949.86/x
3. Step 3: Cross multiply
   1,612.98x = 2,225.61 × 949.86
4. Step 4: Simplify right side
   1,612.98x = 2,114,017.91
5. Step 5: Solve for x
   x = 2,114,017.91/1,612.98
6. Step 6: Final answer
   x = 1,310.63