Finding the Fourth Proportional to 951,151.78, 1,312,554.28 and 515,559.78

Step by Step Solution

1. Step 1: Write the proportion equation
   951,151.78 : 1,312,554.28 = 515,559.78 : x
2. Step 2: Convert to fraction form
   951,151.78/1,312,554.28 = 515,559.78/x
3. Step 3: Cross multiply
   951,151.78x = 1,312,554.28 × 515,559.78
4. Step 4: Simplify right side
   951,151.78x = 676,700,191,062.82
5. Step 5: Solve for x
   x = 676,700,191,062.82/951,151.78
6. Step 6: Final answer
   x = 711,453.42