Finding the Fourth Proportional to 1,385.09, 1,912.92 and 944.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.09 : 1,912.92 = 944.18 : x
2. Step 2: Convert to fraction form
   1,385.09/1,912.92 = 944.18/x
3. Step 3: Cross multiply
   1,385.09x = 1,912.92 × 944.18
4. Step 4: Simplify right side
   1,385.09x = 1,806,140.81
5. Step 5: Solve for x
   x = 1,806,140.81/1,385.09
6. Step 6: Final answer
   x = 1,303.99