Finding the Fourth Proportional to 1,147,072.49, 1,582,978.37 and 630,848.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,147,072.49 : 1,582,978.37 = 630,848.96 : x
2. Step 2: Convert to fraction form
   1,147,072.49/1,582,978.37 = 630,848.96/x
3. Step 3: Cross multiply
   1,147,072.49x = 1,582,978.37 × 630,848.96
4. Step 4: Simplify right side
   1,147,072.49x = 998,620,247,347.86
5. Step 5: Solve for x
   x = 998,620,247,347.86/1,147,072.49
6. Step 6: Final answer
   x = 870,581.64