Finding the Fourth Proportional to 2,153.01, 2,967.79 and 1,406.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,153.01 : 2,967.79 = 1,406.60 : x
2. Step 2: Convert to fraction form
   2,153.01/2,967.79 = 1,406.60/x
3. Step 3: Cross multiply
   2,153.01x = 2,967.79 × 1,406.60
4. Step 4: Simplify right side
   2,153.01x = 4,174,488.83
5. Step 5: Solve for x
   x = 4,174,488.83/2,153.01
6. Step 6: Final answer
   x = 1,938.90