Finding the Fourth Proportional to 2,402.43, 3,314.91 and 1,407.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,402.43 : 3,314.91 = 1,407.72 : x
2. Step 2: Convert to fraction form
   2,402.43/3,314.91 = 1,407.72/x
3. Step 3: Cross multiply
   2,402.43x = 3,314.91 × 1,407.72
4. Step 4: Simplify right side
   2,402.43x = 4,666,465.11
5. Step 5: Solve for x
   x = 4,666,465.11/2,402.43
6. Step 6: Final answer
   x = 1,942.39