Finding the Fourth Proportional to 1,780.52, 2,457.11 and 994.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,780.52 : 2,457.11 = 994.56 : x
2. Step 2: Convert to fraction form
   1,780.52/2,457.11 = 994.56/x
3. Step 3: Cross multiply
   1,780.52x = 2,457.11 × 994.56
4. Step 4: Simplify right side
   1,780.52x = 2,443,750.42
5. Step 5: Solve for x
   x = 2,443,750.42/1,780.52
6. Step 6: Final answer
   x = 1,372.50