Finding the Fourth Proportional to 1,389.01, 1,917.27 and 799.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,389.01 : 1,917.27 = 799.94 : x
2. Step 2: Convert to fraction form
   1,389.01/1,917.27 = 799.94/x
3. Step 3: Cross multiply
   1,389.01x = 1,917.27 × 799.94
4. Step 4: Simplify right side
   1,389.01x = 1,533,700.96
5. Step 5: Solve for x
   x = 1,533,700.96/1,389.01
6. Step 6: Final answer
   x = 1,104.17