Finding the Fourth Proportional to 2,324.60, 3,486.72 and 1,091.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,324.60 : 3,486.72 = 1,091.72 : x
2. Step 2: Convert to fraction form
   2,324.60/3,486.72 = 1,091.72/x
3. Step 3: Cross multiply
   2,324.60x = 3,486.72 × 1,091.72
4. Step 4: Simplify right side
   2,324.60x = 3,806,521.96
5. Step 5: Solve for x
   x = 3,806,521.96/2,324.60
6. Step 6: Final answer
   x = 1,637.50