Finding the Fourth Proportional to 1,664.34, 2,491.38 and 1,045.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,664.34 : 2,491.38 = 1,045.98 : x
2. Step 2: Convert to fraction form
   1,664.34/2,491.38 = 1,045.98/x
3. Step 3: Cross multiply
   1,664.34x = 2,491.38 × 1,045.98
4. Step 4: Simplify right side
   1,664.34x = 2,605,933.65
5. Step 5: Solve for x
   x = 2,605,933.65/1,664.34
6. Step 6: Final answer
   x = 1,565.75