Finding the Fourth Proportional to 1,374.18, 1,896.56 and 814.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,374.18 : 1,896.56 = 814.98 : x
2. Step 2: Convert to fraction form
   1,374.18/1,896.56 = 814.98/x
3. Step 3: Cross multiply
   1,374.18x = 1,896.56 × 814.98
4. Step 4: Simplify right side
   1,374.18x = 1,545,654.39
5. Step 5: Solve for x
   x = 1,545,654.39/1,374.18
6. Step 6: Final answer
   x = 1,124.78