Finding the Fourth Proportional to 2,343.72, 3,510.56 and 1,109.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,343.72 : 3,510.56 = 1,109.28 : x
2. Step 2: Convert to fraction form
   2,343.72/3,510.56 = 1,109.28/x
3. Step 3: Cross multiply
   2,343.72x = 3,510.56 × 1,109.28
4. Step 4: Simplify right side
   2,343.72x = 3,894,188.45
5. Step 5: Solve for x
   x = 3,894,188.45/2,343.72
6. Step 6: Final answer
   x = 1,661.54