Finding the Fourth Proportional to 1,485.23, 2,227.89 and 511.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,485.23 : 2,227.89 = 511.32 : x
2. Step 2: Convert to fraction form
   1,485.23/2,227.89 = 511.32/x
3. Step 3: Cross multiply
   1,485.23x = 2,227.89 × 511.32
4. Step 4: Simplify right side
   1,485.23x = 1,139,164.71
5. Step 5: Solve for x
   x = 1,139,164.71/1,485.23
6. Step 6: Final answer
   x = 767.00