Finding the Fourth Proportional to 2,154.83, 2,973.84 and 1,210.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,154.83 : 2,973.84 = 1,210.69 : x
2. Step 2: Convert to fraction form
   2,154.83/2,973.84 = 1,210.69/x
3. Step 3: Cross multiply
   2,154.83x = 2,973.84 × 1,210.69
4. Step 4: Simplify right side
   2,154.83x = 3,600,398.35
5. Step 5: Solve for x
   x = 3,600,398.35/2,154.83
6. Step 6: Final answer
   x = 1,670.85