Finding the Fourth Proportional to 1,665.60, 2,499.95 and 844.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.60 : 2,499.95 = 844.46 : x
2. Step 2: Convert to fraction form
   1,665.60/2,499.95 = 844.46/x
3. Step 3: Cross multiply
   1,665.60x = 2,499.95 × 844.46
4. Step 4: Simplify right side
   1,665.60x = 2,111,091.05
5. Step 5: Solve for x
   x = 2,111,091.05/1,665.60
6. Step 6: Final answer
   x = 1,267.47