Finding the Fourth Proportional to 1,384,080.10, 2,076,638.55 and 543,235.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384,080.10 : 2,076,638.55 = 543,235.30 : x
2. Step 2: Convert to fraction form
   1,384,080.10/2,076,638.55 = 543,235.30/x
3. Step 3: Cross multiply
   1,384,080.10x = 2,076,638.55 × 543,235.30
4. Step 4: Simplify right side
   1,384,080.10x = 1,128,103,365,700.82
5. Step 5: Solve for x
   x = 1,128,103,365,700.82/1,384,080.10
6. Step 6: Final answer
   x = 815,056.42