Finding the Fourth Proportional to 1,173,150.06, 1,618,981.20 and 663,841.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,173,150.06 : 1,618,981.20 = 663,841.50 : x
2. Step 2: Convert to fraction form
   1,173,150.06/1,618,981.20 = 663,841.50/x
3. Step 3: Cross multiply
   1,173,150.06x = 1,618,981.20 × 663,841.50
4. Step 4: Simplify right side
   1,173,150.06x = 1,074,746,908,279.80
5. Step 5: Solve for x
   x = 1,074,746,908,279.80/1,173,150.06
6. Step 6: Final answer
   x = 916,120.58