Finding the Fourth Proportional to 1,355.57, 1,870.60 and 758.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,355.57 : 1,870.60 = 758.06 : x
2. Step 2: Convert to fraction form
   1,355.57/1,870.60 = 758.06/x
3. Step 3: Cross multiply
   1,355.57x = 1,870.60 × 758.06
4. Step 4: Simplify right side
   1,355.57x = 1,418,027.04
5. Step 5: Solve for x
   x = 1,418,027.04/1,355.57
6. Step 6: Final answer
   x = 1,046.07