Finding the Fourth Proportional to 1,209,085.83, 1,668,551.69 and 657,804.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,209,085.83 : 1,668,551.69 = 657,804.67 : x
2. Step 2: Convert to fraction form
   1,209,085.83/1,668,551.69 = 657,804.67/x
3. Step 3: Cross multiply
   1,209,085.83x = 1,668,551.69 × 657,804.67
4. Step 4: Simplify right side
   1,209,085.83x = 1,097,581,095,457.77
5. Step 5: Solve for x
   x = 1,097,581,095,457.77/1,209,085.83
6. Step 6: Final answer
   x = 907,777.65