Finding the Fourth Proportional to 1,404.28, 1,937.92 and 774.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.28 : 1,937.92 = 774.82 : x
2. Step 2: Convert to fraction form
   1,404.28/1,937.92 = 774.82/x
3. Step 3: Cross multiply
   1,404.28x = 1,937.92 × 774.82
4. Step 4: Simplify right side
   1,404.28x = 1,501,539.17
5. Step 5: Solve for x
   x = 1,501,539.17/1,404.28
6. Step 6: Final answer
   x = 1,069.26