Finding the Fourth Proportional to 1,401.07, 1,933.42 and 771.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.07 : 1,933.42 = 771.59 : x
2. Step 2: Convert to fraction form
   1,401.07/1,933.42 = 771.59/x
3. Step 3: Cross multiply
   1,401.07x = 1,933.42 × 771.59
4. Step 4: Simplify right side
   1,401.07x = 1,491,807.54
5. Step 5: Solve for x
   x = 1,491,807.54/1,401.07
6. Step 6: Final answer
   x = 1,064.76