Finding the Fourth Proportional to 2,191.32, 3,279.92 and 1,149.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.32 : 3,279.92 = 1,149.86 : x
2. Step 2: Convert to fraction form
   2,191.32/3,279.92 = 1,149.86/x
3. Step 3: Cross multiply
   2,191.32x = 3,279.92 × 1,149.86
4. Step 4: Simplify right side
   2,191.32x = 3,771,448.81
5. Step 5: Solve for x
   x = 3,771,448.81/2,191.32
6. Step 6: Final answer
   x = 1,721.09