Finding the Fourth Proportional to 2,788,410.10, 4,181,777.55 and 991,057.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,788,410.10 : 4,181,777.55 = 991,057.30 : x
2. Step 2: Convert to fraction form
   2,788,410.10/4,181,777.55 = 991,057.30/x
3. Step 3: Cross multiply
   2,788,410.10x = 4,181,777.55 × 991,057.30
4. Step 4: Simplify right side
   2,788,410.10x = 4,144,381,167,903.62
5. Step 5: Solve for x
   x = 4,144,381,167,903.62/2,788,410.10
6. Step 6: Final answer
   x = 1,486,288.25