Finding the Fourth Proportional to 2,090.07, 2,884.31 and 1,158.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,090.07 : 2,884.31 = 1,158.57 : x
2. Step 2: Convert to fraction form
   2,090.07/2,884.31 = 1,158.57/x
3. Step 3: Cross multiply
   2,090.07x = 2,884.31 × 1,158.57
4. Step 4: Simplify right side
   2,090.07x = 3,341,669.24
5. Step 5: Solve for x
   x = 3,341,669.24/2,090.07
6. Step 6: Final answer
   x = 1,598.83