Finding the Fourth Proportional to 1,507.18, 2,080.83 and 983.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,507.18 : 2,080.83 = 983.02 : x
2. Step 2: Convert to fraction form
   1,507.18/2,080.83 = 983.02/x
3. Step 3: Cross multiply
   1,507.18x = 2,080.83 × 983.02
4. Step 4: Simplify right side
   1,507.18x = 2,045,497.51
5. Step 5: Solve for x
   x = 2,045,497.51/1,507.18
6. Step 6: Final answer
   x = 1,357.17