Finding the Fourth Proportional to 1,994.77, 2,990.56 and 1,007.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,994.77 : 2,990.56 = 1,007.04 : x
2. Step 2: Convert to fraction form
   1,994.77/2,990.56 = 1,007.04/x
3. Step 3: Cross multiply
   1,994.77x = 2,990.56 × 1,007.04
4. Step 4: Simplify right side
   1,994.77x = 3,011,613.54
5. Step 5: Solve for x
   x = 3,011,613.54/1,994.77
6. Step 6: Final answer
   x = 1,509.75