Finding the Fourth Proportional to 2,154.62, 2,973.37 and 1,210.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,154.62 : 2,973.37 = 1,210.43 : x
2. Step 2: Convert to fraction form
   2,154.62/2,973.37 = 1,210.43/x
3. Step 3: Cross multiply
   2,154.62x = 2,973.37 × 1,210.43
4. Step 4: Simplify right side
   2,154.62x = 3,599,063.96
5. Step 5: Solve for x
   x = 3,599,063.96/2,154.62
6. Step 6: Final answer
   x = 1,670.40