Finding the Fourth Proportional to 1,400.96, 1,933.20 and 1,353.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,400.96 : 1,933.20 = 1,353.78 : x
2. Step 2: Convert to fraction form
   1,400.96/1,933.20 = 1,353.78/x
3. Step 3: Cross multiply
   1,400.96x = 1,933.20 × 1,353.78
4. Step 4: Simplify right side
   1,400.96x = 2,617,127.50
5. Step 5: Solve for x
   x = 2,617,127.50/1,400.96
6. Step 6: Final answer
   x = 1,868.09