Finding the Fourth Proportional to 2,603.12, 3,901.20 and 1,906.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,603.12 : 3,901.20 = 1,906.52 : x
2. Step 2: Convert to fraction form
   2,603.12/3,901.20 = 1,906.52/x
3. Step 3: Cross multiply
   2,603.12x = 3,901.20 × 1,906.52
4. Step 4: Simplify right side
   2,603.12x = 7,437,715.82
5. Step 5: Solve for x
   x = 7,437,715.82/2,603.12
6. Step 6: Final answer
   x = 2,857.23