Finding the Fourth Proportional to 1,573.83, 2,171.46 and 910.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,573.83 : 2,171.46 = 910.56 : x
2. Step 2: Convert to fraction form
   1,573.83/2,171.46 = 910.56/x
3. Step 3: Cross multiply
   1,573.83x = 2,171.46 × 910.56
4. Step 4: Simplify right side
   1,573.83x = 1,977,244.62
5. Step 5: Solve for x
   x = 1,977,244.62/1,573.83
6. Step 6: Final answer
   x = 1,256.33