Finding the Fourth Proportional to 2,155.35, 2,972.05 and 1,656.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155.35 : 2,972.05 = 1,656.89 : x
2. Step 2: Convert to fraction form
   2,155.35/2,972.05 = 1,656.89/x
3. Step 3: Cross multiply
   2,155.35x = 2,972.05 × 1,656.89
4. Step 4: Simplify right side
   2,155.35x = 4,924,359.92
5. Step 5: Solve for x
   x = 4,924,359.92/2,155.35
6. Step 6: Final answer
   x = 2,284.71