Finding the Fourth Proportional to 1,343.64, 1,854.72 and 1,047.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,343.64 : 1,854.72 = 1,047.72 : x
2. Step 2: Convert to fraction form
   1,343.64/1,854.72 = 1,047.72/x
3. Step 3: Cross multiply
   1,343.64x = 1,854.72 × 1,047.72
4. Step 4: Simplify right side
   1,343.64x = 1,943,227.24
5. Step 5: Solve for x
   x = 1,943,227.24/1,343.64
6. Step 6: Final answer
   x = 1,446.24