Finding the Fourth Proportional to 1,905.31, 2,856.61 and 734.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,905.31 : 2,856.61 = 734.32 : x
2. Step 2: Convert to fraction form
   1,905.31/2,856.61 = 734.32/x
3. Step 3: Cross multiply
   1,905.31x = 2,856.61 × 734.32
4. Step 4: Simplify right side
   1,905.31x = 2,097,665.86
5. Step 5: Solve for x
   x = 2,097,665.86/1,905.31
6. Step 6: Final answer
   x = 1,100.96