Finding the Fourth Proportional to 1,409.02, 2,110.72 and 1,294.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,409.02 : 2,110.72 = 1,294.20 : x
2. Step 2: Convert to fraction form
   1,409.02/2,110.72 = 1,294.20/x
3. Step 3: Cross multiply
   1,409.02x = 2,110.72 × 1,294.20
4. Step 4: Simplify right side
   1,409.02x = 2,731,693.82
5. Step 5: Solve for x
   x = 2,731,693.82/1,409.02
6. Step 6: Final answer
   x = 1,938.72