Finding the Fourth Proportional to 1,996.96, 2,994.74 and 763.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,996.96 : 2,994.74 = 763.72 : x
2. Step 2: Convert to fraction form
   1,996.96/2,994.74 = 763.72/x
3. Step 3: Cross multiply
   1,996.96x = 2,994.74 × 763.72
4. Step 4: Simplify right side
   1,996.96x = 2,287,142.83
5. Step 5: Solve for x
   x = 2,287,142.83/1,996.96
6. Step 6: Final answer
   x = 1,145.31