Finding the Fourth Proportional to 1,018.58, 1,526.83 and 402.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.58 : 1,526.83 = 402.04 : x
2. Step 2: Convert to fraction form
   1,018.58/1,526.83 = 402.04/x
3. Step 3: Cross multiply
   1,018.58x = 1,526.83 × 402.04
4. Step 4: Simplify right side
   1,018.58x = 613,841.91
5. Step 5: Solve for x
   x = 613,841.91/1,018.58
6. Step 6: Final answer
   x = 602.64