Finding the Fourth Proportional to 1,280,142.96, 1,766,631.90 and 764,196.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,280,142.96 : 1,766,631.90 = 764,196.24 : x
2. Step 2: Convert to fraction form
   1,280,142.96/1,766,631.90 = 764,196.24/x
3. Step 3: Cross multiply
   1,280,142.96x = 1,766,631.90 × 764,196.24
4. Step 4: Simplify right side
   1,280,142.96x = 1,350,053,455,444.06
5. Step 5: Solve for x
   x = 1,350,053,455,444.06/1,280,142.96
6. Step 6: Final answer
   x = 1,054,611.48