Finding the Fourth Proportional to 1,401.96, 2,111.32 and 1,277.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.96 : 2,111.32 = 1,277.40 : x
2. Step 2: Convert to fraction form
   1,401.96/2,111.32 = 1,277.40/x
3. Step 3: Cross multiply
   1,401.96x = 2,111.32 × 1,277.40
4. Step 4: Simplify right side
   1,401.96x = 2,697,013.27
5. Step 5: Solve for x
   x = 2,697,013.27/1,401.96
6. Step 6: Final answer
   x = 1,923.75