Finding the Fourth Proportional to 1,665.42, 2,491.76 and 1,004.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.42 : 2,491.76 = 1,004.86 : x
2. Step 2: Convert to fraction form
   1,665.42/2,491.76 = 1,004.86/x
3. Step 3: Cross multiply
   1,665.42x = 2,491.76 × 1,004.86
4. Step 4: Simplify right side
   1,665.42x = 2,503,869.95
5. Step 5: Solve for x
   x = 2,503,869.95/1,665.42
6. Step 6: Final answer
   x = 1,503.45