Finding the Fourth Proportional to 1,914.56, 2,641.94 and 1,128.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,914.56 : 2,641.94 = 1,128.44 : x
2. Step 2: Convert to fraction form
   1,914.56/2,641.94 = 1,128.44/x
3. Step 3: Cross multiply
   1,914.56x = 2,641.94 × 1,128.44
4. Step 4: Simplify right side
   1,914.56x = 2,981,270.77
5. Step 5: Solve for x
   x = 2,981,270.77/1,914.56
6. Step 6: Final answer
   x = 1,557.16