Finding the Fourth Proportional to 1,440.54, 1,988.55 and 975.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,440.54 : 1,988.55 = 975.06 : x
2. Step 2: Convert to fraction form
   1,440.54/1,988.55 = 975.06/x
3. Step 3: Cross multiply
   1,440.54x = 1,988.55 × 975.06
4. Step 4: Simplify right side
   1,440.54x = 1,938,955.56
5. Step 5: Solve for x
   x = 1,938,955.56/1,440.54
6. Step 6: Final answer
   x = 1,345.99