Finding the Fourth Proportional to 2,154.68, 2,973.45 and 1,210.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,154.68 : 2,973.45 = 1,210.34 : x
2. Step 2: Convert to fraction form
   2,154.68/2,973.45 = 1,210.34/x
3. Step 3: Cross multiply
   2,154.68x = 2,973.45 × 1,210.34
4. Step 4: Simplify right side
   2,154.68x = 3,598,885.47
5. Step 5: Solve for x
   x = 3,598,885.47/2,154.68
6. Step 6: Final answer
   x = 1,670.26