Finding the Fourth Proportional to 1,355.01, 1,870.92 and 935.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,355.01 : 1,870.92 = 935.16 : x
2. Step 2: Convert to fraction form
   1,355.01/1,870.92 = 935.16/x
3. Step 3: Cross multiply
   1,355.01x = 1,870.92 × 935.16
4. Step 4: Simplify right side
   1,355.01x = 1,749,609.55
5. Step 5: Solve for x
   x = 1,749,609.55/1,355.01
6. Step 6: Final answer
   x = 1,291.22