Finding the Fourth Proportional to 1,401.37, 1,933.93 and 842.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.37 : 1,933.93 = 842.09 : x
2. Step 2: Convert to fraction form
   1,401.37/1,933.93 = 842.09/x
3. Step 3: Cross multiply
   1,401.37x = 1,933.93 × 842.09
4. Step 4: Simplify right side
   1,401.37x = 1,628,534.50
5. Step 5: Solve for x
   x = 1,628,534.50/1,401.37
6. Step 6: Final answer
   x = 1,162.10