Finding the Fourth Proportional to 1,401.50, 1,930.70 and 981.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.50 : 1,930.70 = 981.06 : x
2. Step 2: Convert to fraction form
   1,401.50/1,930.70 = 981.06/x
3. Step 3: Cross multiply
   1,401.50x = 1,930.70 × 981.06
4. Step 4: Simplify right side
   1,401.50x = 1,894,127.64
5. Step 5: Solve for x
   x = 1,894,127.64/1,401.50
6. Step 6: Final answer
   x = 1,351.51