Finding the Fourth Proportional to 1,994.91, 2,991.17 and 762.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,994.91 : 2,991.17 = 762.42 : x
2. Step 2: Convert to fraction form
   1,994.91/2,991.17 = 762.42/x
3. Step 3: Cross multiply
   1,994.91x = 2,991.17 × 762.42
4. Step 4: Simplify right side
   1,994.91x = 2,280,527.83
5. Step 5: Solve for x
   x = 2,280,527.83/1,994.91
6. Step 6: Final answer
   x = 1,143.17