Finding the Fourth Proportional to 1,355.85, 1,870.94 and 758.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,355.85 : 1,870.94 = 758.34 : x
2. Step 2: Convert to fraction form
   1,355.85/1,870.94 = 758.34/x
3. Step 3: Cross multiply
   1,355.85x = 1,870.94 × 758.34
4. Step 4: Simplify right side
   1,355.85x = 1,418,810.54
5. Step 5: Solve for x
   x = 1,418,810.54/1,355.85
6. Step 6: Final answer
   x = 1,046.44