Finding the Fourth Proportional to 1,189,887.98, 1,642,036.33 and 646,012.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,189,887.98 : 1,642,036.33 = 646,012.98 : x
2. Step 2: Convert to fraction form
   1,189,887.98/1,642,036.33 = 646,012.98/x
3. Step 3: Cross multiply
   1,189,887.98x = 1,642,036.33 × 646,012.98
4. Step 4: Simplify right side
   1,189,887.98x = 1,060,776,782,811.56
5. Step 5: Solve for x
   x = 1,060,776,782,811.56/1,189,887.98
6. Step 6: Final answer
   x = 891,492.98