Finding the Fourth Proportional to 1,173,064.06, 1,618,862.52 and 663,755.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,173,064.06 : 1,618,862.52 = 663,755.50 : x
2. Step 2: Convert to fraction form
   1,173,064.06/1,618,862.52 = 663,755.50/x
3. Step 3: Cross multiply
   1,173,064.06x = 1,618,862.52 × 663,755.50
4. Step 4: Simplify right side
   1,173,064.06x = 1,074,528,901,393.86
5. Step 5: Solve for x
   x = 1,074,528,901,393.86/1,173,064.06
6. Step 6: Final answer
   x = 916,001.89