Finding the Fourth Proportional to 1,012,060.50, 1,395,739.50 and 839,705.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012,060.50 : 1,395,739.50 = 839,705.60 : x
2. Step 2: Convert to fraction form
   1,012,060.50/1,395,739.50 = 839,705.60/x
3. Step 3: Cross multiply
   1,012,060.50x = 1,395,739.50 × 839,705.60
4. Step 4: Simplify right side
   1,012,060.50x = 1,172,010,267,312.50
5. Step 5: Solve for x
   x = 1,172,010,267,312.50/1,012,060.50
6. Step 6: Final answer
   x = 1,158,043.68