Finding the Fourth Proportional to 1,073.42, 1,607.69 and 879.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,073.42 : 1,607.69 = 879.02 : x
2. Step 2: Convert to fraction form
   1,073.42/1,607.69 = 879.02/x
3. Step 3: Cross multiply
   1,073.42x = 1,607.69 × 879.02
4. Step 4: Simplify right side
   1,073.42x = 1,413,185.82
5. Step 5: Solve for x
   x = 1,413,185.82/1,073.42
6. Step 6: Final answer
   x = 1,316.53