Finding the Fourth Proportional to 1,839.16, 2,758.20 and 1,513.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,839.16 : 2,758.20 = 1,513.72 : x
2. Step 2: Convert to fraction form
   1,839.16/2,758.20 = 1,513.72/x
3. Step 3: Cross multiply
   1,839.16x = 2,758.20 × 1,513.72
4. Step 4: Simplify right side
   1,839.16x = 4,175,142.50
5. Step 5: Solve for x
   x = 4,175,142.50/1,839.16
6. Step 6: Final answer
   x = 2,270.14