Finding the Fourth Proportional to 2,107.32, 2,908.50 and 1,223.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,107.32 : 2,908.50 = 1,223.52 : x
2. Step 2: Convert to fraction form
   2,107.32/2,908.50 = 1,223.52/x
3. Step 3: Cross multiply
   2,107.32x = 2,908.50 × 1,223.52
4. Step 4: Simplify right side
   2,107.32x = 3,558,607.92
5. Step 5: Solve for x
   x = 3,558,607.92/2,107.32
6. Step 6: Final answer
   x = 1,688.69