Finding the Fourth Proportional to 1,092.96, 1,507.28 and 983.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,092.96 : 1,507.28 = 983.61 : x
2. Step 2: Convert to fraction form
   1,092.96/1,507.28 = 983.61/x
3. Step 3: Cross multiply
   1,092.96x = 1,507.28 × 983.61
4. Step 4: Simplify right side
   1,092.96x = 1,482,570.76
5. Step 5: Solve for x
   x = 1,482,570.76/1,092.96
6. Step 6: Final answer
   x = 1,356.47