Finding the Fourth Proportional to 1,569.69, 2,354.55 and 1,222.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,569.69 : 2,354.55 = 1,222.20 : x
2. Step 2: Convert to fraction form
   1,569.69/2,354.55 = 1,222.20/x
3. Step 3: Cross multiply
   1,569.69x = 2,354.55 × 1,222.20
4. Step 4: Simplify right side
   1,569.69x = 2,877,731.01
5. Step 5: Solve for x
   x = 2,877,731.01/1,569.69
6. Step 6: Final answer
   x = 1,833.31