Finding the Fourth Proportional to 1,355.55, 1,870.42 and 758.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,355.55 : 1,870.42 = 758.06 : x
2. Step 2: Convert to fraction form
   1,355.55/1,870.42 = 758.06/x
3. Step 3: Cross multiply
   1,355.55x = 1,870.42 × 758.06
4. Step 4: Simplify right side
   1,355.55x = 1,417,877.44
5. Step 5: Solve for x
   x = 1,417,877.44/1,355.55
6. Step 6: Final answer
   x = 1,045.98