Finding the Fourth Proportional to 1,142.18, 1,705.01 and 1,003.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,142.18 : 1,705.01 = 1,003.79 : x
2. Step 2: Convert to fraction form
   1,142.18/1,705.01 = 1,003.79/x
3. Step 3: Cross multiply
   1,142.18x = 1,705.01 × 1,003.79
4. Step 4: Simplify right side
   1,142.18x = 1,711,478.76
5. Step 5: Solve for x
   x = 1,711,478.76/1,142.18
6. Step 6: Final answer
   x = 1,498.43