Finding the Fourth Proportional to 1,129,632.50, 1,558,903.78 and 620,345.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,129,632.50 : 1,558,903.78 = 620,345.82 : x
2. Step 2: Convert to fraction form
   1,129,632.50/1,558,903.78 = 620,345.82/x
3. Step 3: Cross multiply
   1,129,632.50x = 1,558,903.78 × 620,345.82
4. Step 4: Simplify right side
   1,129,632.50x = 967,059,443,705.20
5. Step 5: Solve for x
   x = 967,059,443,705.20/1,129,632.50
6. Step 6: Final answer
   x = 856,083.23