Finding the Fourth Proportional to 1,421,499.38, 1,961,665.49 and 776,923.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,421,499.38 : 1,961,665.49 = 776,923.95 : x
2. Step 2: Convert to fraction form
   1,421,499.38/1,961,665.49 = 776,923.95/x
3. Step 3: Cross multiply
   1,421,499.38x = 1,961,665.49 × 776,923.95
4. Step 4: Simplify right side
   1,421,499.38x = 1,524,064,910,368.04
5. Step 5: Solve for x
   x = 1,524,064,910,368.04/1,421,499.38
6. Step 6: Final answer
   x = 1,072,153.06