Finding the Fourth Proportional to 1,401.59, 1,934.18 and 772.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.59 : 1,934.18 = 772.18 : x
2. Step 2: Convert to fraction form
   1,401.59/1,934.18 = 772.18/x
3. Step 3: Cross multiply
   1,401.59x = 1,934.18 × 772.18
4. Step 4: Simplify right side
   1,401.59x = 1,493,540.19
5. Step 5: Solve for x
   x = 1,493,540.19/1,401.59
6. Step 6: Final answer
   x = 1,065.61