Finding the Fourth Proportional to 1,374.73, 1,897.02 and 815.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,374.73 : 1,897.02 = 815.22 : x
2. Step 2: Convert to fraction form
   1,374.73/1,897.02 = 815.22/x
3. Step 3: Cross multiply
   1,374.73x = 1,897.02 × 815.22
4. Step 4: Simplify right side
   1,374.73x = 1,546,488.64
5. Step 5: Solve for x
   x = 1,546,488.64/1,374.73
6. Step 6: Final answer
   x = 1,124.94