Finding the Fourth Proportional to 1,925.37, 2,639.67 and 1,890.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,925.37 : 2,639.67 = 1,890.34 : x
2. Step 2: Convert to fraction form
   1,925.37/2,639.67 = 1,890.34/x
3. Step 3: Cross multiply
   1,925.37x = 2,639.67 × 1,890.34
4. Step 4: Simplify right side
   1,925.37x = 4,989,870.73
5. Step 5: Solve for x
   x = 4,989,870.73/1,925.37
6. Step 6: Final answer
   x = 2,591.64