Finding the Fourth Proportional to 1,085.02, 1,496.58 and 711.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.02 : 1,496.58 = 711.40 : x
2. Step 2: Convert to fraction form
   1,085.02/1,496.58 = 711.40/x
3. Step 3: Cross multiply
   1,085.02x = 1,496.58 × 711.40
4. Step 4: Simplify right side
   1,085.02x = 1,064,667.01
5. Step 5: Solve for x
   x = 1,064,667.01/1,085.02
6. Step 6: Final answer
   x = 981.24