Finding the Fourth Proportional to 1,355.47, 1,870.56 and 734.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,355.47 : 1,870.56 = 734.47 : x
2. Step 2: Convert to fraction form
   1,355.47/1,870.56 = 734.47/x
3. Step 3: Cross multiply
   1,355.47x = 1,870.56 × 734.47
4. Step 4: Simplify right side
   1,355.47x = 1,373,860.85
5. Step 5: Solve for x
   x = 1,373,860.85/1,355.47
6. Step 6: Final answer
   x = 1,013.57