Finding the Fourth Proportional to 1,385.92, 1,911.72 and 944.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.92 : 1,911.72 = 944.02 : x
2. Step 2: Convert to fraction form
   1,385.92/1,911.72 = 944.02/x
3. Step 3: Cross multiply
   1,385.92x = 1,911.72 × 944.02
4. Step 4: Simplify right side
   1,385.92x = 1,804,701.91
5. Step 5: Solve for x
   x = 1,804,701.91/1,385.92
6. Step 6: Final answer
   x = 1,302.17