Finding the Fourth Proportional to 2,513.91, 3,768.03 and 1,213.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,513.91 : 3,768.03 = 1,213.86 : x
2. Step 2: Convert to fraction form
   2,513.91/3,768.03 = 1,213.86/x
3. Step 3: Cross multiply
   2,513.91x = 3,768.03 × 1,213.86
4. Step 4: Simplify right side
   2,513.91x = 4,573,860.90
5. Step 5: Solve for x
   x = 4,573,860.90/2,513.91
6. Step 6: Final answer
   x = 1,819.42