Finding the Fourth Proportional to 1,267,391.52, 1,748,988.86 and 686,601.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,267,391.52 : 1,748,988.86 = 686,601.32 : x
2. Step 2: Convert to fraction form
   1,267,391.52/1,748,988.86 = 686,601.32/x
3. Step 3: Cross multiply
   1,267,391.52x = 1,748,988.86 × 686,601.32
4. Step 4: Simplify right side
   1,267,391.52x = 1,200,858,047,763.34
5. Step 5: Solve for x
   x = 1,200,858,047,763.34/1,267,391.52
6. Step 6: Final answer
   x = 947,503.62