Finding the Fourth Proportional to 1,018.34, 1,405.06 and 598.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.34 : 1,405.06 = 598.65 : x
2. Step 2: Convert to fraction form
   1,018.34/1,405.06 = 598.65/x
3. Step 3: Cross multiply
   1,018.34x = 1,405.06 × 598.65
4. Step 4: Simplify right side
   1,018.34x = 841,139.69
5. Step 5: Solve for x
   x = 841,139.69/1,018.34
6. Step 6: Final answer
   x = 826.00