Finding the Fourth Proportional to 1,563.32, 2,156.46 and 1,121.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,563.32 : 2,156.46 = 1,121.33 : x
2. Step 2: Convert to fraction form
   1,563.32/2,156.46 = 1,121.33/x
3. Step 3: Cross multiply
   1,563.32x = 2,156.46 × 1,121.33
4. Step 4: Simplify right side
   1,563.32x = 2,418,092.51
5. Step 5: Solve for x
   x = 2,418,092.51/1,563.32
6. Step 6: Final answer
   x = 1,546.77