Finding the Fourth Proportional to 2,003.56, 3,005.31 and 907.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,003.56 : 3,005.31 = 907.17 : x
2. Step 2: Convert to fraction form
   2,003.56/3,005.31 = 907.17/x
3. Step 3: Cross multiply
   2,003.56x = 3,005.31 × 907.17
4. Step 4: Simplify right side
   2,003.56x = 2,726,327.07
5. Step 5: Solve for x
   x = 2,726,327.07/2,003.56
6. Step 6: Final answer
   x = 1,360.74