Finding the Fourth Proportional to 1,401.40, 2,100.89 and 751.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.40 : 2,100.89 = 751.51 : x
2. Step 2: Convert to fraction form
   1,401.40/2,100.89 = 751.51/x
3. Step 3: Cross multiply
   1,401.40x = 2,100.89 × 751.51
4. Step 4: Simplify right side
   1,401.40x = 1,578,836.09
5. Step 5: Solve for x
   x = 1,578,836.09/1,401.40
6. Step 6: Final answer
   x = 1,126.61