Finding the Fourth Proportional to 1,401.03, 1,934.22 and 870.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.03 : 1,934.22 = 870.12 : x
2. Step 2: Convert to fraction form
   1,401.03/1,934.22 = 870.12/x
3. Step 3: Cross multiply
   1,401.03x = 1,934.22 × 870.12
4. Step 4: Simplify right side
   1,401.03x = 1,683,003.51
5. Step 5: Solve for x
   x = 1,683,003.51/1,401.03
6. Step 6: Final answer
   x = 1,201.26