Finding the Fourth Proportional to 1,171,392.48, 1,616,559.12 and 648,111.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,171,392.48 : 1,616,559.12 = 648,111.36 : x
2. Step 2: Convert to fraction form
   1,171,392.48/1,616,559.12 = 648,111.36/x
3. Step 3: Cross multiply
   1,171,392.48x = 1,616,559.12 × 648,111.36
4. Step 4: Simplify right side
   1,171,392.48x = 1,047,710,329,783.60
5. Step 5: Solve for x
   x = 1,047,710,329,783.60/1,171,392.48
6. Step 6: Final answer
   x = 894,414.42