Finding the Fourth Proportional to 2,223.59, 3,068.40 and 1,228.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,223.59 : 3,068.40 = 1,228.86 : x
2. Step 2: Convert to fraction form
   2,223.59/3,068.40 = 1,228.86/x
3. Step 3: Cross multiply
   2,223.59x = 3,068.40 × 1,228.86
4. Step 4: Simplify right side
   2,223.59x = 3,770,634.02
5. Step 5: Solve for x
   x = 3,770,634.02/2,223.59
6. Step 6: Final answer
   x = 1,695.74