Finding the Fourth Proportional to 2,210.52, 3,050.53 and 1,215.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,210.52 : 3,050.53 = 1,215.86 : x
2. Step 2: Convert to fraction form
   2,210.52/3,050.53 = 1,215.86/x
3. Step 3: Cross multiply
   2,210.52x = 3,050.53 × 1,215.86
4. Step 4: Simplify right side
   2,210.52x = 3,709,017.41
5. Step 5: Solve for x
   x = 3,709,017.41/2,210.52
6. Step 6: Final answer
   x = 1,677.89