Finding the Fourth Proportional to 2,019.58, 3,030.90 and 909.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.58 : 3,030.90 = 909.34 : x
2. Step 2: Convert to fraction form
   2,019.58/3,030.90 = 909.34/x
3. Step 3: Cross multiply
   2,019.58x = 3,030.90 × 909.34
4. Step 4: Simplify right side
   2,019.58x = 2,756,118.61
5. Step 5: Solve for x
   x = 2,756,118.61/2,019.58
6. Step 6: Final answer
   x = 1,364.70