Finding the Fourth Proportional to 1,002.05, 1,501.93 and 886.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.05 : 1,501.93 = 886.72 : x
2. Step 2: Convert to fraction form
   1,002.05/1,501.93 = 886.72/x
3. Step 3: Cross multiply
   1,002.05x = 1,501.93 × 886.72
4. Step 4: Simplify right side
   1,002.05x = 1,331,791.37
5. Step 5: Solve for x
   x = 1,331,791.37/1,002.05
6. Step 6: Final answer
   x = 1,329.07