Finding the Fourth Proportional to 1,141.18, 1,710.69 and 491.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141.18 : 1,710.69 = 491.50 : x
2. Step 2: Convert to fraction form
   1,141.18/1,710.69 = 491.50/x
3. Step 3: Cross multiply
   1,141.18x = 1,710.69 × 491.50
4. Step 4: Simplify right side
   1,141.18x = 840,804.14
5. Step 5: Solve for x
   x = 840,804.14/1,141.18
6. Step 6: Final answer
   x = 736.78