Finding the Fourth Proportional to 2,261.32, 3,123.16 and 1,910.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,261.32 : 3,123.16 = 1,910.21 : x
2. Step 2: Convert to fraction form
   2,261.32/3,123.16 = 1,910.21/x
3. Step 3: Cross multiply
   2,261.32x = 3,123.16 × 1,910.21
4. Step 4: Simplify right side
   2,261.32x = 5,965,879.86
5. Step 5: Solve for x
   x = 5,965,879.86/2,261.32
6. Step 6: Final answer
   x = 2,638.22