Finding the Fourth Proportional to 2,153.52, 2,970.68 and 1,778.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,153.52 : 2,970.68 = 1,778.31 : x
2. Step 2: Convert to fraction form
   2,153.52/2,970.68 = 1,778.31/x
3. Step 3: Cross multiply
   2,153.52x = 2,970.68 × 1,778.31
4. Step 4: Simplify right side
   2,153.52x = 5,282,781.06
5. Step 5: Solve for x
   x = 5,282,781.06/2,153.52
6. Step 6: Final answer
   x = 2,453.09