Finding the Fourth Proportional to 1,374.81, 1,896.59 and 814.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,374.81 : 1,896.59 = 814.89 : x
2. Step 2: Convert to fraction form
   1,374.81/1,896.59 = 814.89/x
3. Step 3: Cross multiply
   1,374.81x = 1,896.59 × 814.89
4. Step 4: Simplify right side
   1,374.81x = 1,545,508.15
5. Step 5: Solve for x
   x = 1,545,508.15/1,374.81
6. Step 6: Final answer
   x = 1,124.16