Finding the Fourth Proportional to 1,553,978.20, 2,068,118.11 and 1,553,978.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,553,978.20 : 2,068,118.11 = 1,553,978.20 : x
2. Step 2: Convert to fraction form
   1,553,978.20/2,068,118.11 = 1,553,978.20/x
3. Step 3: Cross multiply
   1,553,978.20x = 2,068,118.11 × 1,553,978.20
4. Step 4: Simplify right side
   1,553,978.20x = 3,213,810,457,965.20
5. Step 5: Solve for x
   x = 3,213,810,457,965.20/1,553,978.20
6. Step 6: Final answer
   x = 2,068,118.11