Finding the Fourth Proportional to 1,156.84, 1,734.20 and 426.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,156.84 : 1,734.20 = 426.22 : x
2. Step 2: Convert to fraction form
   1,156.84/1,734.20 = 426.22/x
3. Step 3: Cross multiply
   1,156.84x = 1,734.20 × 426.22
4. Step 4: Simplify right side
   1,156.84x = 739,150.72
5. Step 5: Solve for x
   x = 739,150.72/1,156.84
6. Step 6: Final answer
   x = 638.94