Finding the Fourth Proportional to 2,101.86, 3,153.40 and 1,007.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.86 : 3,153.40 = 1,007.16 : x
2. Step 2: Convert to fraction form
   2,101.86/3,153.40 = 1,007.16/x
3. Step 3: Cross multiply
   2,101.86x = 3,153.40 × 1,007.16
4. Step 4: Simplify right side
   2,101.86x = 3,175,978.34
5. Step 5: Solve for x
   x = 3,175,978.34/2,101.86
6. Step 6: Final answer
   x = 1,511.03