Finding the Fourth Proportional to 1,499.16, 2,068.86 and 909.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.16 : 2,068.86 = 909.54 : x
2. Step 2: Convert to fraction form
   1,499.16/2,068.86 = 909.54/x
3. Step 3: Cross multiply
   1,499.16x = 2,068.86 × 909.54
4. Step 4: Simplify right side
   1,499.16x = 1,881,710.92
5. Step 5: Solve for x
   x = 1,881,710.92/1,499.16
6. Step 6: Final answer
   x = 1,255.18