Finding the Fourth Proportional to 1,401.30, 1,932.12 and 1,028.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.30 : 1,932.12 = 1,028.16 : x
2. Step 2: Convert to fraction form
   1,401.30/1,932.12 = 1,028.16/x
3. Step 3: Cross multiply
   1,401.30x = 1,932.12 × 1,028.16
4. Step 4: Simplify right side
   1,401.30x = 1,986,528.50
5. Step 5: Solve for x
   x = 1,986,528.50/1,401.30
6. Step 6: Final answer
   x = 1,417.63