Finding the Fourth Proportional to 1,355.56, 1,870.68 and 734.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,355.56 : 1,870.68 = 734.56 : x
2. Step 2: Convert to fraction form
   1,355.56/1,870.68 = 734.56/x
3. Step 3: Cross multiply
   1,355.56x = 1,870.68 × 734.56
4. Step 4: Simplify right side
   1,355.56x = 1,374,126.70
5. Step 5: Solve for x
   x = 1,374,126.70/1,355.56
6. Step 6: Final answer
   x = 1,013.70