Finding the Fourth Proportional to 1,603.94, 2,404.96 and 783.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,603.94 : 2,404.96 = 783.54 : x
2. Step 2: Convert to fraction form
   1,603.94/2,404.96 = 783.54/x
3. Step 3: Cross multiply
   1,603.94x = 2,404.96 × 783.54
4. Step 4: Simplify right side
   1,603.94x = 1,884,380.40
5. Step 5: Solve for x
   x = 1,884,380.40/1,603.94
6. Step 6: Final answer
   x = 1,174.85