Finding the Fourth Proportional to 1,225.83, 1,837.83 and 738.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,225.83 : 1,837.83 = 738.78 : x
2. Step 2: Convert to fraction form
   1,225.83/1,837.83 = 738.78/x
3. Step 3: Cross multiply
   1,225.83x = 1,837.83 × 738.78
4. Step 4: Simplify right side
   1,225.83x = 1,357,752.05
5. Step 5: Solve for x
   x = 1,357,752.05/1,225.83
6. Step 6: Final answer
   x = 1,107.62