Finding the Fourth Proportional to 1,346.72, 2,018.86 and 936.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,346.72 : 2,018.86 = 936.05 : x
2. Step 2: Convert to fraction form
   1,346.72/2,018.86 = 936.05/x
3. Step 3: Cross multiply
   1,346.72x = 2,018.86 × 936.05
4. Step 4: Simplify right side
   1,346.72x = 1,889,753.90
5. Step 5: Solve for x
   x = 1,889,753.90/1,346.72
6. Step 6: Final answer
   x = 1,403.23