Finding the Fourth Proportional to 2,086.80, 3,130.10 and 700.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.80 : 3,130.10 = 700.16 : x
2. Step 2: Convert to fraction form
   2,086.80/3,130.10 = 700.16/x
3. Step 3: Cross multiply
   2,086.80x = 3,130.10 × 700.16
4. Step 4: Simplify right side
   2,086.80x = 2,191,570.82
5. Step 5: Solve for x
   x = 2,191,570.82/2,086.80
6. Step 6: Final answer
   x = 1,050.21