Finding the Fourth Proportional to 1,353.51, 1,867.56 and 814.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353.51 : 1,867.56 = 814.86 : x
2. Step 2: Convert to fraction form
   1,353.51/1,867.56 = 814.86/x
3. Step 3: Cross multiply
   1,353.51x = 1,867.56 × 814.86
4. Step 4: Simplify right side
   1,353.51x = 1,521,796.89
5. Step 5: Solve for x
   x = 1,521,796.89/1,353.51
6. Step 6: Final answer
   x = 1,124.33