Finding the Fourth Proportional to 1,401.41, 1,933.96 and 780.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.41 : 1,933.96 = 780.41 : x
2. Step 2: Convert to fraction form
   1,401.41/1,933.96 = 780.41/x
3. Step 3: Cross multiply
   1,401.41x = 1,933.96 × 780.41
4. Step 4: Simplify right side
   1,401.41x = 1,509,272.05
5. Step 5: Solve for x
   x = 1,509,272.05/1,401.41
6. Step 6: Final answer
   x = 1,076.97