Finding the Fourth Proportional to 1,401.98, 2,104.90 and 786.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.98 : 2,104.90 = 786.06 : x
2. Step 2: Convert to fraction form
   1,401.98/2,104.90 = 786.06/x
3. Step 3: Cross multiply
   1,401.98x = 2,104.90 × 786.06
4. Step 4: Simplify right side
   1,401.98x = 1,654,575.73
5. Step 5: Solve for x
   x = 1,654,575.73/1,401.98
6. Step 6: Final answer
   x = 1,180.17