Finding the Fourth Proportional to 1,926.16, 2,886.83 and 938.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,926.16 : 2,886.83 = 938.16 : x
2. Step 2: Convert to fraction form
   1,926.16/2,886.83 = 938.16/x
3. Step 3: Cross multiply
   1,926.16x = 2,886.83 × 938.16
4. Step 4: Simplify right side
   1,926.16x = 2,708,308.43
5. Step 5: Solve for x
   x = 2,708,308.43/1,926.16
6. Step 6: Final answer
   x = 1,406.07