Finding the Fourth Proportional to 1,010,895.30, 1,395,595.98 and 689,078.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,010,895.30 : 1,395,595.98 = 689,078.16 : x
2. Step 2: Convert to fraction form
   1,010,895.30/1,395,595.98 = 689,078.16/x
3. Step 3: Cross multiply
   1,010,895.30x = 1,395,595.98 × 689,078.16
4. Step 4: Simplify right side
   1,010,895.30x = 961,674,710,001.80
5. Step 5: Solve for x
   x = 961,674,710,001.80/1,010,895.30
6. Step 6: Final answer
   x = 951,309.90