Finding the Fourth Proportional to 1,357.20, 1,874.16 and 834.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,357.20 : 1,874.16 = 834.12 : x
2. Step 2: Convert to fraction form
   1,357.20/1,874.16 = 834.12/x
3. Step 3: Cross multiply
   1,357.20x = 1,874.16 × 834.12
4. Step 4: Simplify right side
   1,357.20x = 1,563,274.34
5. Step 5: Solve for x
   x = 1,563,274.34/1,357.20
6. Step 6: Final answer
   x = 1,151.84