Finding the Fourth Proportional to 1,803.34, 2,487.82 and 1,057.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,803.34 : 2,487.82 = 1,057.33 : x
2. Step 2: Convert to fraction form
   1,803.34/2,487.82 = 1,057.33/x
3. Step 3: Cross multiply
   1,803.34x = 2,487.82 × 1,057.33
4. Step 4: Simplify right side
   1,803.34x = 2,630,446.72
5. Step 5: Solve for x
   x = 2,630,446.72/1,803.34
6. Step 6: Final answer
   x = 1,458.65