Finding the Fourth Proportional to 1,507.44, 2,079.63 and 1,003.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,507.44 : 2,079.63 = 1,003.89 : x
2. Step 2: Convert to fraction form
   1,507.44/2,079.63 = 1,003.89/x
3. Step 3: Cross multiply
   1,507.44x = 2,079.63 × 1,003.89
4. Step 4: Simplify right side
   1,507.44x = 2,087,719.76
5. Step 5: Solve for x
   x = 2,087,719.76/1,507.44
6. Step 6: Final answer
   x = 1,384.94