Finding the Fourth Proportional to 1,034.56, 1,557.97 and 920.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,034.56 : 1,557.97 = 920.62 : x
2. Step 2: Convert to fraction form
   1,034.56/1,557.97 = 920.62/x
3. Step 3: Cross multiply
   1,034.56x = 1,557.97 × 920.62
4. Step 4: Simplify right side
   1,034.56x = 1,434,298.34
5. Step 5: Solve for x
   x = 1,434,298.34/1,034.56
6. Step 6: Final answer
   x = 1,386.38