Finding the Fourth Proportional to 2,190.87, 3,283.71 and 1,264.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,190.87 : 3,283.71 = 1,264.52 : x
2. Step 2: Convert to fraction form
   2,190.87/3,283.71 = 1,264.52/x
3. Step 3: Cross multiply
   2,190.87x = 3,283.71 × 1,264.52
4. Step 4: Simplify right side
   2,190.87x = 4,152,300.55
5. Step 5: Solve for x
   x = 4,152,300.55/2,190.87
6. Step 6: Final answer
   x = 1,895.27