Finding the Fourth Proportional to 1,109,613.55, 1,531,251.57 and 619,590.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109,613.55 : 1,531,251.57 = 619,590.62 : x
2. Step 2: Convert to fraction form
   1,109,613.55/1,531,251.57 = 619,590.62/x
3. Step 3: Cross multiply
   1,109,613.55x = 1,531,251.57 × 619,590.62
4. Step 4: Simplify right side
   1,109,613.55x = 948,749,109,632.27
5. Step 5: Solve for x
   x = 948,749,109,632.27/1,109,613.55
6. Step 6: Final answer
   x = 855,026.61