Finding the Fourth Proportional to 1,071.27, 1,605.69 and 492.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,071.27 : 1,605.69 = 492.93 : x
2. Step 2: Convert to fraction form
   1,071.27/1,605.69 = 492.93/x
3. Step 3: Cross multiply
   1,071.27x = 1,605.69 × 492.93
4. Step 4: Simplify right side
   1,071.27x = 791,492.77
5. Step 5: Solve for x
   x = 791,492.77/1,071.27
6. Step 6: Final answer
   x = 738.84