Finding the Fourth Proportional to 1,994.52, 2,990.88 and 1,069.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,994.52 : 2,990.88 = 1,069.92 : x
2. Step 2: Convert to fraction form
   1,994.52/2,990.88 = 1,069.92/x
3. Step 3: Cross multiply
   1,994.52x = 2,990.88 × 1,069.92
4. Step 4: Simplify right side
   1,994.52x = 3,200,002.33
5. Step 5: Solve for x
   x = 3,200,002.33/1,994.52
6. Step 6: Final answer
   x = 1,604.40