Finding the Fourth Proportional to 1,521.51, 2,099.73 and 892.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,521.51 : 2,099.73 = 892.50 : x
2. Step 2: Convert to fraction form
   1,521.51/2,099.73 = 892.50/x
3. Step 3: Cross multiply
   1,521.51x = 2,099.73 × 892.50
4. Step 4: Simplify right side
   1,521.51x = 1,874,009.03
5. Step 5: Solve for x
   x = 1,874,009.03/1,521.51
6. Step 6: Final answer
   x = 1,231.68