Finding the Fourth Proportional to 1,230,796.83, 1,698,585.01 and 687,038.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,230,796.83 : 1,698,585.01 = 687,038.57 : x
2. Step 2: Convert to fraction form
   1,230,796.83/1,698,585.01 = 687,038.57/x
3. Step 3: Cross multiply
   1,230,796.83x = 1,698,585.01 × 687,038.57
4. Step 4: Simplify right side
   1,230,796.83x = 1,166,993,406,083.31
5. Step 5: Solve for x
   x = 1,166,993,406,083.31/1,230,796.83
6. Step 6: Final answer
   x = 948,160.88