Finding the Fourth Proportional to 1,018.08, 1,525.86 and 368.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.08 : 1,525.86 = 368.10 : x
2. Step 2: Convert to fraction form
   1,018.08/1,525.86 = 368.10/x
3. Step 3: Cross multiply
   1,018.08x = 1,525.86 × 368.10
4. Step 4: Simplify right side
   1,018.08x = 561,669.07
5. Step 5: Solve for x
   x = 561,669.07/1,018.08
6. Step 6: Final answer
   x = 551.69