Finding the Fourth Proportional to 1,374.16, 1,896.48 and 814.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,374.16 : 1,896.48 = 814.72 : x
2. Step 2: Convert to fraction form
   1,374.16/1,896.48 = 814.72/x
3. Step 3: Cross multiply
   1,374.16x = 1,896.48 × 814.72
4. Step 4: Simplify right side
   1,374.16x = 1,545,086.63
5. Step 5: Solve for x
   x = 1,545,086.63/1,374.16
6. Step 6: Final answer
   x = 1,124.39