Finding the Fourth Proportional to 1,039.77, 1,549.74 and 981.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.77 : 1,549.74 = 981.39 : x
2. Step 2: Convert to fraction form
   1,039.77/1,549.74 = 981.39/x
3. Step 3: Cross multiply
   1,039.77x = 1,549.74 × 981.39
4. Step 4: Simplify right side
   1,039.77x = 1,520,899.34
5. Step 5: Solve for x
   x = 1,520,899.34/1,039.77
6. Step 6: Final answer
   x = 1,462.73