Finding the Fourth Proportional to 1,355.50, 1,870.59 and 734.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,355.50 : 1,870.59 = 734.50 : x
2. Step 2: Convert to fraction form
   1,355.50/1,870.59 = 734.50/x
3. Step 3: Cross multiply
   1,355.50x = 1,870.59 × 734.50
4. Step 4: Simplify right side
   1,355.50x = 1,373,948.36
5. Step 5: Solve for x
   x = 1,373,948.36/1,355.50
6. Step 6: Final answer
   x = 1,013.61