Finding the Fourth Proportional to 2,221.16, 3,333.78 and 1,126.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,221.16 : 3,333.78 = 1,126.31 : x
2. Step 2: Convert to fraction form
   2,221.16/3,333.78 = 1,126.31/x
3. Step 3: Cross multiply
   2,221.16x = 3,333.78 × 1,126.31
4. Step 4: Simplify right side
   2,221.16x = 3,754,865.58
5. Step 5: Solve for x
   x = 3,754,865.58/2,221.16
6. Step 6: Final answer
   x = 1,690.50