Finding the Fourth Proportional to 1,399.94, 2,101.53 and 751.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,399.94 : 2,101.53 = 751.94 : x
2. Step 2: Convert to fraction form
   1,399.94/2,101.53 = 751.94/x
3. Step 3: Cross multiply
   1,399.94x = 2,101.53 × 751.94
4. Step 4: Simplify right side
   1,399.94x = 1,580,224.47
5. Step 5: Solve for x
   x = 1,580,224.47/1,399.94
6. Step 6: Final answer
   x = 1,128.78