Finding the Fourth Proportional to 1,800.42, 2,483.91 and 1,210.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,800.42 : 2,483.91 = 1,210.02 : x
2. Step 2: Convert to fraction form
   1,800.42/2,483.91 = 1,210.02/x
3. Step 3: Cross multiply
   1,800.42x = 2,483.91 × 1,210.02
4. Step 4: Simplify right side
   1,800.42x = 3,005,580.78
5. Step 5: Solve for x
   x = 3,005,580.78/1,800.42
6. Step 6: Final answer
   x = 1,669.38