Finding the Fourth Proportional to 1,931.97, 2,665.20 and 1,400.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,931.97 : 2,665.20 = 1,400.00 : x
2. Step 2: Convert to fraction form
   1,931.97/2,665.20 = 1,400.00/x
3. Step 3: Cross multiply
   1,931.97x = 2,665.20 × 1,400.00
4. Step 4: Simplify right side
   1,931.97x = 3,731,266.67
5. Step 5: Solve for x
   x = 3,731,266.67/1,931.97
6. Step 6: Final answer
   x = 1,931.33