Finding the Fourth Proportional to 1,507.91, 2,081.18 and 1,010.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,507.91 : 2,081.18 = 1,010.62 : x
2. Step 2: Convert to fraction form
   1,507.91/2,081.18 = 1,010.62/x
3. Step 3: Cross multiply
   1,507.91x = 2,081.18 × 1,010.62
4. Step 4: Simplify right side
   1,507.91x = 2,103,282.13
5. Step 5: Solve for x
   x = 2,103,282.13/1,507.91
6. Step 6: Final answer
   x = 1,394.83