Finding the Fourth Proportional to 2,154.63, 2,973.27 and 1,210.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,154.63 : 2,973.27 = 1,210.59 : x
2. Step 2: Convert to fraction form
   2,154.63/2,973.27 = 1,210.59/x
3. Step 3: Cross multiply
   2,154.63x = 2,973.27 × 1,210.59
4. Step 4: Simplify right side
   2,154.63x = 3,599,410.93
5. Step 5: Solve for x
   x = 3,599,410.93/2,154.63
6. Step 6: Final answer
   x = 1,670.55