Finding the Fourth Proportional to 1,360.83, 1,880.46 and 1,028.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.83 : 1,880.46 = 1,028.69 : x
2. Step 2: Convert to fraction form
   1,360.83/1,880.46 = 1,028.69/x
3. Step 3: Cross multiply
   1,360.83x = 1,880.46 × 1,028.69
4. Step 4: Simplify right side
   1,360.83x = 1,934,401.00
5. Step 5: Solve for x
   x = 1,934,401.00/1,360.83
6. Step 6: Final answer
   x = 1,421.49