Finding the Fourth Proportional to 1,300.10, 1,950.15 and 326.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.10 : 1,950.15 = 326.18 : x
2. Step 2: Convert to fraction form
   1,300.10/1,950.15 = 326.18/x
3. Step 3: Cross multiply
   1,300.10x = 1,950.15 × 326.18
4. Step 4: Simplify right side
   1,300.10x = 636,090.18
5. Step 5: Solve for x
   x = 636,090.18/1,300.10
6. Step 6: Final answer
   x = 489.26