Finding the Fourth Proportional to 1,355.10, 1,870.04 and 734.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,355.10 : 1,870.04 = 734.10 : x
2. Step 2: Convert to fraction form
   1,355.10/1,870.04 = 734.10/x
3. Step 3: Cross multiply
   1,355.10x = 1,870.04 × 734.10
4. Step 4: Simplify right side
   1,355.10x = 1,372,783.34
5. Step 5: Solve for x
   x = 1,372,783.34/1,355.10
6. Step 6: Final answer
   x = 1,013.05