Finding the Fourth Proportional to 1,131.04, 1,697.64 and 619.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.04 : 1,697.64 = 619.12 : x
2. Step 2: Convert to fraction form
   1,131.04/1,697.64 = 619.12/x
3. Step 3: Cross multiply
   1,131.04x = 1,697.64 × 619.12
4. Step 4: Simplify right side
   1,131.04x = 1,051,042.88
5. Step 5: Solve for x
   x = 1,051,042.88/1,131.04
6. Step 6: Final answer
   x = 929.27