Finding the Fourth Proportional to 1,495.31, 2,063.72 and 905.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,495.31 : 2,063.72 = 905.86 : x
2. Step 2: Convert to fraction form
   1,495.31/2,063.72 = 905.86/x
3. Step 3: Cross multiply
   1,495.31x = 2,063.72 × 905.86
4. Step 4: Simplify right side
   1,495.31x = 1,869,441.40
5. Step 5: Solve for x
   x = 1,869,441.40/1,495.31
6. Step 6: Final answer
   x = 1,250.20