Finding the Fourth Proportional to 1,355.63, 1,870.76 and 734.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,355.63 : 1,870.76 = 734.63 : x
2. Step 2: Convert to fraction form
   1,355.63/1,870.76 = 734.63/x
3. Step 3: Cross multiply
   1,355.63x = 1,870.76 × 734.63
4. Step 4: Simplify right side
   1,355.63x = 1,374,308.90
5. Step 5: Solve for x
   x = 1,374,308.90/1,355.63
6. Step 6: Final answer
   x = 1,013.78