Finding the Fourth Proportional to 1,780.02, 2,456.45 and 1,081.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,780.02 : 2,456.45 = 1,081.46 : x
2. Step 2: Convert to fraction form
   1,780.02/2,456.45 = 1,081.46/x
3. Step 3: Cross multiply
   1,780.02x = 2,456.45 × 1,081.46
4. Step 4: Simplify right side
   1,780.02x = 2,656,552.42
5. Step 5: Solve for x
   x = 2,656,552.42/1,780.02
6. Step 6: Final answer
   x = 1,492.43