Finding the Fourth Proportional to 1,371.40, 1,893.17 and 930.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,371.40 : 1,893.17 = 930.02 : x
2. Step 2: Convert to fraction form
   1,371.40/1,893.17 = 930.02/x
3. Step 3: Cross multiply
   1,371.40x = 1,893.17 × 930.02
4. Step 4: Simplify right side
   1,371.40x = 1,760,678.82
5. Step 5: Solve for x
   x = 1,760,678.82/1,371.40
6. Step 6: Final answer
   x = 1,283.86