Finding the Fourth Proportional to 2,223.51, 3,064.70 and 1,906.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,223.51 : 3,064.70 = 1,906.40 : x
2. Step 2: Convert to fraction form
   2,223.51/3,064.70 = 1,906.40/x
3. Step 3: Cross multiply
   2,223.51x = 3,064.70 × 1,906.40
4. Step 4: Simplify right side
   2,223.51x = 5,842,528.76
5. Step 5: Solve for x
   x = 5,842,528.76/2,223.51
6. Step 6: Final answer
   x = 2,627.62