Finding the Fourth Proportional to 2,154.59, 2,973.58 and 1,210.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,154.59 : 2,973.58 = 1,210.38 : x
2. Step 2: Convert to fraction form
   2,154.59/2,973.58 = 1,210.38/x
3. Step 3: Cross multiply
   2,154.59x = 2,973.58 × 1,210.38
4. Step 4: Simplify right side
   2,154.59x = 3,599,164.46
5. Step 5: Solve for x
   x = 3,599,164.46/2,154.59
6. Step 6: Final answer
   x = 1,670.47