Finding the Fourth Proportional to 1,003.76, 1,386.92 and 784.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003.76 : 1,386.92 = 784.52 : x
2. Step 2: Convert to fraction form
   1,003.76/1,386.92 = 784.52/x
3. Step 3: Cross multiply
   1,003.76x = 1,386.92 × 784.52
4. Step 4: Simplify right side
   1,003.76x = 1,088,066.48
5. Step 5: Solve for x
   x = 1,088,066.48/1,003.76
6. Step 6: Final answer
   x = 1,083.99