Finding the Fourth Proportional to 1,100.72, 1,519.49 and 707.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.72 : 1,519.49 = 707.94 : x
2. Step 2: Convert to fraction form
   1,100.72/1,519.49 = 707.94/x
3. Step 3: Cross multiply
   1,100.72x = 1,519.49 × 707.94
4. Step 4: Simplify right side
   1,100.72x = 1,075,709.52
5. Step 5: Solve for x
   x = 1,075,709.52/1,100.72
6. Step 6: Final answer
   x = 977.28