Finding the Fourth Proportional to 1,401.77, 1,932.12 and 1,284.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.77 : 1,932.12 = 1,284.12 : x
2. Step 2: Convert to fraction form
   1,401.77/1,932.12 = 1,284.12/x
3. Step 3: Cross multiply
   1,401.77x = 1,932.12 × 1,284.12
4. Step 4: Simplify right side
   1,401.77x = 2,481,073.93
5. Step 5: Solve for x
   x = 2,481,073.93/1,401.77
6. Step 6: Final answer
   x = 1,769.95