Finding the Fourth Proportional to 2,225.82, 3,333.24 and 1,128.66

Step by Step Solution

1. Step 1: Write the proportion equation
   2,225.82 : 3,333.24 = 1,128.66 : x
2. Step 2: Convert to fraction form
   2,225.82/3,333.24 = 1,128.66/x
3. Step 3: Cross multiply
   2,225.82x = 3,333.24 × 1,128.66
4. Step 4: Simplify right side
   2,225.82x = 3,762,094.66
5. Step 5: Solve for x
   x = 3,762,094.66/2,225.82
6. Step 6: Final answer
   x = 1,690.21