Finding the Fourth Proportional to 1,312,404.86, 1,968,355.74 and 553,997

Step by Step Solution

1. Step 1: Write the proportion equation
   1,312,404.86 : 1,968,355.74 = 553,997 : x
2. Step 2: Convert to fraction form
   1,312,404.86/1,968,355.74 = 553,997/x
3. Step 3: Cross multiply
   1,312,404.86x = 1,968,355.74 × 553,997
4. Step 4: Simplify right side
   1,312,404.86x = 1,090,463,174,892.78
5. Step 5: Solve for x
   x = 1,090,463,174,892.78/1,312,404.86
6. Step 6: Final answer
   x = 830,889.31