Finding the Fourth Proportional to 3,603.30, 4,971.90 and 2,111.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,603.30 : 4,971.90 = 2,111.18 : x
2. Step 2: Convert to fraction form
   3,603.30/4,971.90 = 2,111.18/x
3. Step 3: Cross multiply
   3,603.30x = 4,971.90 × 2,111.18
4. Step 4: Simplify right side
   3,603.30x = 10,496,575.84
5. Step 5: Solve for x
   x = 10,496,575.84/3,603.30
6. Step 6: Final answer
   x = 2,913.05