Finding the Fourth Proportional to 1,914.24, 2,641.56 and 1,128.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,914.24 : 2,641.56 = 1,128.32 : x
2. Step 2: Convert to fraction form
   1,914.24/2,641.56 = 1,128.32/x
3. Step 3: Cross multiply
   1,914.24x = 2,641.56 × 1,128.32
4. Step 4: Simplify right side
   1,914.24x = 2,980,524.98
5. Step 5: Solve for x
   x = 2,980,524.98/1,914.24
6. Step 6: Final answer
   x = 1,557.03