Finding the Fourth Proportional to 1,739.58, 2,607.53 and 814.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,739.58 : 2,607.53 = 814.37 : x
2. Step 2: Convert to fraction form
   1,739.58/2,607.53 = 814.37/x
3. Step 3: Cross multiply
   1,739.58x = 2,607.53 × 814.37
4. Step 4: Simplify right side
   1,739.58x = 2,123,491.76
5. Step 5: Solve for x
   x = 2,123,491.76/1,739.58
6. Step 6: Final answer
   x = 1,220.69