Finding the Fourth Proportional to 1,397.74, 1,929.55 and 944.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397.74 : 1,929.55 = 944.30 : x
2. Step 2: Convert to fraction form
   1,397.74/1,929.55 = 944.30/x
3. Step 3: Cross multiply
   1,397.74x = 1,929.55 × 944.30
4. Step 4: Simplify right side
   1,397.74x = 1,822,074.07
5. Step 5: Solve for x
   x = 1,822,074.07/1,397.74
6. Step 6: Final answer
   x = 1,303.59