Finding the Fourth Proportional to 1,427.34, 1,970.52 and 930.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427.34 : 1,970.52 = 930.30 : x
2. Step 2: Convert to fraction form
   1,427.34/1,970.52 = 930.30/x
3. Step 3: Cross multiply
   1,427.34x = 1,970.52 × 930.30
4. Step 4: Simplify right side
   1,427.34x = 1,833,174.76
5. Step 5: Solve for x
   x = 1,833,174.76/1,427.34
6. Step 6: Final answer
   x = 1,284.33