Finding the Fourth Proportional to 2,612.05, 3,917.86 and 1,225.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.05 : 3,917.86 = 1,225.03 : x
2. Step 2: Convert to fraction form
   2,612.05/3,917.86 = 1,225.03/x
3. Step 3: Cross multiply
   2,612.05x = 3,917.86 × 1,225.03
4. Step 4: Simplify right side
   2,612.05x = 4,799,496.04
5. Step 5: Solve for x
   x = 4,799,496.04/2,612.05
6. Step 6: Final answer
   x = 1,837.44