Finding the Fourth Proportional to 1,651.96, 2,279.72 and 905.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,651.96 : 2,279.72 = 905.99 : x
2. Step 2: Convert to fraction form
   1,651.96/2,279.72 = 905.99/x
3. Step 3: Cross multiply
   1,651.96x = 2,279.72 × 905.99
4. Step 4: Simplify right side
   1,651.96x = 2,065,387.59
5. Step 5: Solve for x
   x = 2,065,387.59/1,651.96
6. Step 6: Final answer
   x = 1,250.27