Finding the Fourth Proportional to 1,521.59, 2,099.78 and 892.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,521.59 : 2,099.78 = 892.23 : x
2. Step 2: Convert to fraction form
   1,521.59/2,099.78 = 892.23/x
3. Step 3: Cross multiply
   1,521.59x = 2,099.78 × 892.23
4. Step 4: Simplify right side
   1,521.59x = 1,873,486.71
5. Step 5: Solve for x
   x = 1,873,486.71/1,521.59
6. Step 6: Final answer
   x = 1,231.27