Finding the Fourth Proportional to 1,569.55, 2,354.55 and 789.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,569.55 : 2,354.55 = 789.57 : x
2. Step 2: Convert to fraction form
   1,569.55/2,354.55 = 789.57/x
3. Step 3: Cross multiply
   1,569.55x = 2,354.55 × 789.57
4. Step 4: Simplify right side
   1,569.55x = 1,859,070.27
5. Step 5: Solve for x
   x = 1,859,070.27/1,569.55
6. Step 6: Final answer
   x = 1,184.46