Finding the Fourth Proportional to 1,573.95, 2,172.29 and 910.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,573.95 : 2,172.29 = 910.83 : x
2. Step 2: Convert to fraction form
   1,573.95/2,172.29 = 910.83/x
3. Step 3: Cross multiply
   1,573.95x = 2,172.29 × 910.83
4. Step 4: Simplify right side
   1,573.95x = 1,978,582.35
5. Step 5: Solve for x
   x = 1,978,582.35/1,573.95
6. Step 6: Final answer
   x = 1,257.08