Finding the Fourth Proportional to 1,409.55, 1,943.89 and 1,210.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,409.55 : 1,943.89 = 1,210.32 : x
2. Step 2: Convert to fraction form
   1,409.55/1,943.89 = 1,210.32/x
3. Step 3: Cross multiply
   1,409.55x = 1,943.89 × 1,210.32
4. Step 4: Simplify right side
   1,409.55x = 2,352,727.95
5. Step 5: Solve for x
   x = 2,352,727.95/1,409.55
6. Step 6: Final answer
   x = 1,669.14