Finding the Fourth Proportional to 3,123.94, 4,688.76 and 1,664.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,123.94 : 4,688.76 = 1,664.32 : x
2. Step 2: Convert to fraction form
   3,123.94/4,688.76 = 1,664.32/x
3. Step 3: Cross multiply
   3,123.94x = 4,688.76 × 1,664.32
4. Step 4: Simplify right side
   3,123.94x = 7,803,597.04
5. Step 5: Solve for x
   x = 7,803,597.04/3,123.94
6. Step 6: Final answer
   x = 2,498.00