Finding the Fourth Proportional to 1,142.19, 1,575.72 and 700.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,142.19 : 1,575.72 = 700.07 : x
2. Step 2: Convert to fraction form
   1,142.19/1,575.72 = 700.07/x
3. Step 3: Cross multiply
   1,142.19x = 1,575.72 × 700.07
4. Step 4: Simplify right side
   1,142.19x = 1,103,106.42
5. Step 5: Solve for x
   x = 1,103,106.42/1,142.19
6. Step 6: Final answer
   x = 965.78