Finding the Fourth Proportional to 1,428,189.31, 2,142,274.72 and 363,222.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,428,189.31 : 2,142,274.72 = 363,222.17 : x
2. Step 2: Convert to fraction form
   1,428,189.31/2,142,274.72 = 363,222.17/x
3. Step 3: Cross multiply
   1,428,189.31x = 2,142,274.72 × 363,222.17
4. Step 4: Simplify right side
   1,428,189.31x = 778,121,672,534.54
5. Step 5: Solve for x
   x = 778,121,672,534.54/1,428,189.31
6. Step 6: Final answer
   x = 544,830.90