Finding the Fourth Proportional to 2,211.34, 3,314.26 and 1,115.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,211.34 : 3,314.26 = 1,115.10 : x
2. Step 2: Convert to fraction form
   2,211.34/3,314.26 = 1,115.10/x
3. Step 3: Cross multiply
   2,211.34x = 3,314.26 × 1,115.10
4. Step 4: Simplify right side
   2,211.34x = 3,695,731.33
5. Step 5: Solve for x
   x = 3,695,731.33/2,211.34
6. Step 6: Final answer
   x = 1,671.26