Finding the Fourth Proportional to 2,609.93, 3,914.72 and 1,223.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,609.93 : 3,914.72 = 1,223.58 : x
2. Step 2: Convert to fraction form
   2,609.93/3,914.72 = 1,223.58/x
3. Step 3: Cross multiply
   2,609.93x = 3,914.72 × 1,223.58
4. Step 4: Simplify right side
   2,609.93x = 4,789,956.66
5. Step 5: Solve for x
   x = 4,789,956.66/2,609.93
6. Step 6: Final answer
   x = 1,835.28