Finding the Fourth Proportional to 2,610.45, 3,913.48 and 1,223.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.45 : 3,913.48 = 1,223.06 : x
2. Step 2: Convert to fraction form
   2,610.45/3,913.48 = 1,223.06/x
3. Step 3: Cross multiply
   2,610.45x = 3,913.48 × 1,223.06
4. Step 4: Simplify right side
   2,610.45x = 4,786,402.81
5. Step 5: Solve for x
   x = 4,786,402.81/2,610.45
6. Step 6: Final answer
   x = 1,833.55