Finding the Fourth Proportional to 1,552.34, 2,141.77 and 922.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,552.34 : 2,141.77 = 922.55 : x
2. Step 2: Convert to fraction form
   1,552.34/2,141.77 = 922.55/x
3. Step 3: Cross multiply
   1,552.34x = 2,141.77 × 922.55
4. Step 4: Simplify right side
   1,552.34x = 1,975,884.56
5. Step 5: Solve for x
   x = 1,975,884.56/1,552.34
6. Step 6: Final answer
   x = 1,272.84