Finding the Fourth Proportional to 1,109,978.64, 1,665,014.40 and 351,803.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109,978.64 : 1,665,014.40 = 351,803.52 : x
2. Step 2: Convert to fraction form
   1,109,978.64/1,665,014.40 = 351,803.52/x
3. Step 3: Cross multiply
   1,109,978.64x = 1,665,014.40 × 351,803.52
4. Step 4: Simplify right side
   1,109,978.64x = 585,757,926,770.69
5. Step 5: Solve for x
   x = 585,757,926,770.69/1,109,978.64
6. Step 6: Final answer
   x = 527,720.00