Finding the Fourth Proportional to 2,078,009.60, 3,117,111.60 and 658,176.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078,009.60 : 3,117,111.60 = 658,176.80 : x
2. Step 2: Convert to fraction form
   2,078,009.60/3,117,111.60 = 658,176.80/x
3. Step 3: Cross multiply
   2,078,009.60x = 3,117,111.60 × 658,176.80
4. Step 4: Simplify right side
   2,078,009.60x = 2,051,610,538,130.88
5. Step 5: Solve for x
   x = 2,051,610,538,130.88/2,078,009.60
6. Step 6: Final answer
   x = 987,295.99