Finding the Fourth Proportional to 1,401.84, 1,924.02 and 1,285.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.84 : 1,924.02 = 1,285.20 : x
2. Step 2: Convert to fraction form
   1,401.84/1,924.02 = 1,285.20/x
3. Step 3: Cross multiply
   1,401.84x = 1,924.02 × 1,285.20
4. Step 4: Simplify right side
   1,401.84x = 2,472,750.50
5. Step 5: Solve for x
   x = 2,472,750.50/1,401.84
6. Step 6: Final answer
   x = 1,763.93