Finding the Fourth Proportional to 1,403.83, 1,937.15 and 774.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,403.83 : 1,937.15 = 774.39 : x
2. Step 2: Convert to fraction form
   1,403.83/1,937.15 = 774.39/x
3. Step 3: Cross multiply
   1,403.83x = 1,937.15 × 774.39
4. Step 4: Simplify right side
   1,403.83x = 1,500,115.88
5. Step 5: Solve for x
   x = 1,500,115.88/1,403.83
6. Step 6: Final answer
   x = 1,068.59