Finding the Fourth Proportional to 1,672.29, 2,308.35 and 1,034.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,672.29 : 2,308.35 = 1,034.72 : x
2. Step 2: Convert to fraction form
   1,672.29/2,308.35 = 1,034.72/x
3. Step 3: Cross multiply
   1,672.29x = 2,308.35 × 1,034.72
4. Step 4: Simplify right side
   1,672.29x = 2,388,496.51
5. Step 5: Solve for x
   x = 2,388,496.51/1,672.29
6. Step 6: Final answer
   x = 1,428.28