Finding the Fourth Proportional to 1,978,196.17, 2,966,879.07 and 557,920.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978,196.17 : 2,966,879.07 = 557,920.10 : x
2. Step 2: Convert to fraction form
   1,978,196.17/2,966,879.07 = 557,920.10/x
3. Step 3: Cross multiply
   1,978,196.17x = 2,966,879.07 × 557,920.10
4. Step 4: Simplify right side
   1,978,196.17x = 1,655,281,467,422.31
5. Step 5: Solve for x
   x = 1,655,281,467,422.31/1,978,196.17
6. Step 6: Final answer
   x = 836,763.05