Finding the Fourth Proportional to 1,435.05, 2,152.98 and 557.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.05 : 2,152.98 = 557.82 : x
2. Step 2: Convert to fraction form
   1,435.05/2,152.98 = 557.82/x
3. Step 3: Cross multiply
   1,435.05x = 2,152.98 × 557.82
4. Step 4: Simplify right side
   1,435.05x = 1,200,975.30
5. Step 5: Solve for x
   x = 1,200,975.30/1,435.05
6. Step 6: Final answer
   x = 836.89