Finding the Fourth Proportional to 1,507.90, 2,081.86 and 949.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,507.90 : 2,081.86 = 949.14 : x
2. Step 2: Convert to fraction form
   1,507.90/2,081.86 = 949.14/x
3. Step 3: Cross multiply
   1,507.90x = 2,081.86 × 949.14
4. Step 4: Simplify right side
   1,507.90x = 1,975,976.60
5. Step 5: Solve for x
   x = 1,975,976.60/1,507.90
6. Step 6: Final answer
   x = 1,310.42