Finding the Fourth Proportional to 2,070.36, 2,858.90 and 1,513.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.36 : 2,858.90 = 1,513.89 : x
2. Step 2: Convert to fraction form
   2,070.36/2,858.90 = 1,513.89/x
3. Step 3: Cross multiply
   2,070.36x = 2,858.90 × 1,513.89
4. Step 4: Simplify right side
   2,070.36x = 4,328,052.55
5. Step 5: Solve for x
   x = 4,328,052.55/2,070.36
6. Step 6: Final answer
   x = 2,090.48