Finding the Fourth Proportional to 1,914.63, 2,642.28 and 1,128.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,914.63 : 2,642.28 = 1,128.93 : x
2. Step 2: Convert to fraction form
   1,914.63/2,642.28 = 1,128.93/x
3. Step 3: Cross multiply
   1,914.63x = 2,642.28 × 1,128.93
4. Step 4: Simplify right side
   1,914.63x = 2,982,949.16
5. Step 5: Solve for x
   x = 2,982,949.16/1,914.63
6. Step 6: Final answer
   x = 1,557.98