Finding the Fourth Proportional to 2,402.42, 3,603.80 and 1,015.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,402.42 : 3,603.80 = 1,015.90 : x
2. Step 2: Convert to fraction form
   2,402.42/3,603.80 = 1,015.90/x
3. Step 3: Cross multiply
   2,402.42x = 3,603.80 × 1,015.90
4. Step 4: Simplify right side
   2,402.42x = 3,661,100.42
5. Step 5: Solve for x
   x = 3,661,100.42/2,402.42
6. Step 6: Final answer
   x = 1,523.92