Finding the Fourth Proportional to 2,090.21, 3,135.82 and 1,047.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,090.21 : 3,135.82 = 1,047.62 : x
2. Step 2: Convert to fraction form
   2,090.21/3,135.82 = 1,047.62/x
3. Step 3: Cross multiply
   2,090.21x = 3,135.82 × 1,047.62
4. Step 4: Simplify right side
   2,090.21x = 3,285,156.90
5. Step 5: Solve for x
   x = 3,285,156.90/2,090.21
6. Step 6: Final answer
   x = 1,571.69