Finding the Fourth Proportional to 1,681,731.31, 2,320,756.82 and 917,790.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,681,731.31 : 2,320,756.82 = 917,790.34 : x
2. Step 2: Convert to fraction form
   1,681,731.31/2,320,756.82 = 917,790.34/x
3. Step 3: Cross multiply
   1,681,731.31x = 2,320,756.82 × 917,790.34
4. Step 4: Simplify right side
   1,681,731.31x = 2,129,968,174,692.38
5. Step 5: Solve for x
   x = 2,129,968,174,692.38/1,681,731.31
6. Step 6: Final answer
   x = 1,266,532.99