Finding the Fourth Proportional to 1,507, 2,081.31 and 1,036.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,507 : 2,081.31 = 1,036.15 : x
2. Step 2: Convert to fraction form
   1,507/2,081.31 = 1,036.15/x
3. Step 3: Cross multiply
   1,507x = 2,081.31 × 1,036.15
4. Step 4: Simplify right side
   1,507x = 2,156,549.36
5. Step 5: Solve for x
   x = 2,156,549.36/1,507
6. Step 6: Final answer
   x = 1,431.02