Finding the Fourth Proportional to 1,403.92, 1,937.32 and 774.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,403.92 : 1,937.32 = 774.34 : x
2. Step 2: Convert to fraction form
   1,403.92/1,937.32 = 774.34/x
3. Step 3: Cross multiply
   1,403.92x = 1,937.32 × 774.34
4. Step 4: Simplify right side
   1,403.92x = 1,500,144.37
5. Step 5: Solve for x
   x = 1,500,144.37/1,403.92
6. Step 6: Final answer
   x = 1,068.54