Finding the Fourth Proportional to 1,664.15, 2,292.61 and 1,379.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,664.15 : 2,292.61 = 1,379.50 : x
2. Step 2: Convert to fraction form
   1,664.15/2,292.61 = 1,379.50/x
3. Step 3: Cross multiply
   1,664.15x = 2,292.61 × 1,379.50
4. Step 4: Simplify right side
   1,664.15x = 3,162,637.13
5. Step 5: Solve for x
   x = 3,162,637.13/1,664.15
6. Step 6: Final answer
   x = 1,900.46