Finding the Fourth Proportional to 1,499.46, 2,068.74 and 909.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.46 : 2,068.74 = 909.78 : x
2. Step 2: Convert to fraction form
   1,499.46/2,068.74 = 909.78/x
3. Step 3: Cross multiply
   1,499.46x = 2,068.74 × 909.78
4. Step 4: Simplify right side
   1,499.46x = 1,882,098.28
5. Step 5: Solve for x
   x = 1,882,098.28/1,499.46
6. Step 6: Final answer
   x = 1,255.18