Finding the Fourth Proportional to 2,119.62, 2,925.05 and 1,223.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,119.62 : 2,925.05 = 1,223.33 : x
2. Step 2: Convert to fraction form
   2,119.62/2,925.05 = 1,223.33/x
3. Step 3: Cross multiply
   2,119.62x = 2,925.05 × 1,223.33
4. Step 4: Simplify right side
   2,119.62x = 3,578,280.67
5. Step 5: Solve for x
   x = 3,578,280.67/2,119.62
6. Step 6: Final answer
   x = 1,688.17