Finding the Fourth Proportional to 1,004.77, 1,380.73 and 838.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,004.77 : 1,380.73 = 838.69 : x
2. Step 2: Convert to fraction form
   1,004.77/1,380.73 = 838.69/x
3. Step 3: Cross multiply
   1,004.77x = 1,380.73 × 838.69
4. Step 4: Simplify right side
   1,004.77x = 1,158,009.83
5. Step 5: Solve for x
   x = 1,158,009.83/1,004.77
6. Step 6: Final answer
   x = 1,152.52