Finding the Fourth Proportional to 2,663.23, 3,994.88 and 1,019.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,663.23 : 3,994.88 = 1,019.87 : x
2. Step 2: Convert to fraction form
   2,663.23/3,994.88 = 1,019.87/x
3. Step 3: Cross multiply
   2,663.23x = 3,994.88 × 1,019.87
4. Step 4: Simplify right side
   2,663.23x = 4,074,263.15
5. Step 5: Solve for x
   x = 4,074,263.15/2,663.23
6. Step 6: Final answer
   x = 1,529.82