Finding the Fourth Proportional to 2,190.84, 3,287.82 and 1,037.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,190.84 : 3,287.82 = 1,037.40 : x
2. Step 2: Convert to fraction form
   2,190.84/3,287.82 = 1,037.40/x
3. Step 3: Cross multiply
   2,190.84x = 3,287.82 × 1,037.40
4. Step 4: Simplify right side
   2,190.84x = 3,410,784.47
5. Step 5: Solve for x
   x = 3,410,784.47/2,190.84
6. Step 6: Final answer
   x = 1,556.84