Finding the Fourth Proportional to 2,603.84, 3,902.87 and 1,142.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,603.84 : 3,902.87 = 1,142.80 : x
2. Step 2: Convert to fraction form
   2,603.84/3,902.87 = 1,142.80/x
3. Step 3: Cross multiply
   2,603.84x = 3,902.87 × 1,142.80
4. Step 4: Simplify right side
   2,603.84x = 4,460,174.61
5. Step 5: Solve for x
   x = 4,460,174.61/2,603.84
6. Step 6: Final answer
   x = 1,712.93